NMAT Compiled Questions in Toppr PDF

PHYSICS 1. Which of the following must be known in order to determine the power output of an automobile? a. Final velocity and height b. Mass and amount of work performed c. Force exerted and distance of motion d. Work performed and elapsed time of work Answer: D 2. One mole of an ideal monoatomic g...

PHYSICS 1. Which of the following must be known in order to determine the power output of an automobile? a. Final velocity and height b. Mass and amount of work performed c. Force exerted and distance of motion d. Work performed and elapsed time of work Answer: D 2. One mole of an ideal monoatomic gas is mixed with 1 mole of an ideal diatomic gas. The molar specific heat of the mixture at constant volume is (in cal): A) 22 cal B) 4 cal C) 8 cal D) 12 cal Answer: B 3.A runner completes one circuit of a track in 10s. The radius of the track is 100 m. The velocity of the runner is ___ A) 10 m B) 10 m/s C) 0 m/s D) 100 m/s Answer: C 4. The location of a particle has changed. What can we say about the displacement and the distance covered by the particle? A. Neither can be zero B. One may be zero C. Both may be zero  D. One is positive and other is negative. Answer: A 5. A particle moves for 20s with velocity 3m/s and then moves with velocity 4m/s for another 20s and finally moves with velocity 5m/s for next 20s what is the average velocity of the particle? (in m/s) A. 3 B. 5 C. 4 D. ze Answer: C 6. Which of the following sentences is an example of instantaneous velocity? Answer: B 7. Two trains each traveling at a speed of 20kmph approach each other on the same straight track. A bird that can fly at a speed of 40kmph flies off from one train when they are 40km apart and heads directly for the other train. On reaching the other train it flies directly back to the first train and so forth. Before the trains crash, the total distance traveled by the bird is22 A. 20km B. 40km C. 60km D. 80kmm Answer: B 8. Captain Ravi of a plane, wishes to proceed due west. The cruising speed of the plane is 251 m/s relative to the air. A weather report indicates that a 65 m/s wind is blowing from the south to the north. In what direction, measured to due west, should Ravi, head the plane relative to the air? A. 5° B. 10° C. 15° D. 20° Answer: C 6. The IUPAC nomenclature of the given compound is. a. methanal b. methanol c. methane Answer: A 7. In the following list of acids, separate strong acids from weak acids : [Hydrochloric acid, Citric acid, Acetic acid, Nitric acid, Formic acid, Sulphuric acid.] a. Weak acids → Acetic acid, Nitric acid, Sulphuric acid Strong acids → Citric acid, Formic acid, Hydrochloric acid b. Weak acids → Hydrochloric acid, Formic acid, Citric acid Strong acids → Nitric acid, Sulphuric acid, Acetic acid c. Weak acids → Hydrochloric acid, Nitric acid, Sulphuric acid Strong acids → Citric acid, Formic acid, Acetic acid d. Weak acids → Citric acid, Formic acid, Acetic acid Strong acids → Hydrochloric acid, Nitric acid, Sulphuric acida. 0.5 M b. 1.0 M c. 2.0 M d. 0.1 M Answer: What will be the molarity of a solution containing 5g of NaOH in 250 ml solution? 10. C A. 0.1 B. 1 C. 0.5 D. 2 Answer: A 9.Answer: B 10. An automobile traveling with a speed of 60 Km/h can apply the brake to stop within a distance of 20 m If the car is going twice ash fast i.e., 120 Km/h the stopping distance will be A. 60m B. 40m C. 20m D. 80m Answer: D CHEMISTRY 1. Question a. clyclopropanonel b. clyclopropanal c. clyclopropanecarbaldehyde d. clyclopropanenitrile Answer: B 2. Identify the carboxylic acid having the highest boiling point. a. Hexanoic Acid - 205 boiling point b. Heptanoic Acid- 223 boiling point c. Nonanoic Acid- 254 boiling point d. Decanoic Acid- 269 boiling point Answer: D 3. Which one of the following is an example of non-reducing sugar? a. Sucrose-free ketone free aldehyde Stachyose, Sucrose, Verbascose, Trehalose b. Lactose c. Maltose d. Cellobiose Answer: A 4. Adenine pairs with thymine through: a. one hydrogen bond b. two hydrogen bonds c. one phosphate bond d. four hydrogen bonds Answer: B 5. The IUPAC nomenclature of the given organic compound will be (CH3)2C(CH2CH3)CH2CH(Cl)CH3: a. 2-chloro-4-ethyl-4-methylpentane b. 5-chloro 3,3-dimethylhexane c. 4-chloro-2-ethyl-2-methylpentane d. 2-chloro-4,4-dimethylhexane Answer: D 6. The IUPAC nomenclature of the given compound is. a. methanal b. methanol c. methane Answer: A 7. In the following list of acids, separate strong acids from weak acids : [Hydrochloric acid, Citric acid, Acetic acid, Nitric acid, Formic acid, Sulphuric acid.] a. Weak acids → Acetic acid, Nitric acid, Sulphuric acid Strong acids → Citric acid, Formic acid, Hydrochloric acid b. Weak acids → Hydrochloric acid, Formic acid, Citric acid Strong acids → Nitric acid, Sulphuric acid, Acetic acid c. Weak acids → Hydrochloric acid, Nitric acid, Sulphuric acid Strong acids → Citric acid, Formic acid, Acetic acid d. Weak acids → Citric acid, Formic acid, Acetic acid Strong acids → Hydrochloric acid, Nitric acid, Sulphuric acid Answer: D 8. Select IUPAC structure with correct numbering for IUPAC name of the compound; A B C D Answer: A. 9. What will be the molarity of a solution containing 5 g of sodium hydroxide in 250 mL of water? a. 0.5 M b. 1.0 M c. 2.0 M d. 0.1 M Answer: A 10. What will be the molarity of a solution containing 5g of NaOH in 250 ml solution? A. 0.1 B. 1 C. 0.5 D. 2 Answer: A MEEN-REIZA PACIO FOR CLASS T01-GC18 QUESTIONNAIRE Chemistry:  1. If absolute temperature of an ideal gas is doubled and pressure is halved, then volume of gas will be: A. Four times B. Double C. One-fourth D. Unchanged ANSWER: B 2. A 50 g sample of metal was heated to 1000C and then dropped into a beaker containing 50g of water at 250C. If the specific heat capacity of the metal is 0.25 cal/g, what is the final temperature of the water in 0C A. 27 B. 40 C. 60 D. 86 ANSWER: B 3. The functional groups present in following compound is: ?? A. Ketone and aldehyde??? B. Alcohol and ester C. Aldehyde and alcohol D. Carboxylic acid and alcohol ANSWER: A 4. Which of the following are not isomers ? CH3CH2CH2OH and CH3CH2CH2CH2OH CH3CH2OH and CH3OCH3 CH3CN and CH3NC Batumbakal, Barbara D. Section T01 Very good 1.You want to remove as much CO2 gas as possible from a water solution. Which of the following treatments would be most effective? a. cool the solution b. filter the solution c. compress the solution d. boil the solution Answer: D 2. 1qq21 a. 1,600 years b. 2,400 years c. 3,200 years d. 4,000 years Answer: C 3. When 2.0 grams of methane are burned in a bomb calorimeter containing 2000 grams of water, it causes the temperature of the water to rise by 13.300C. What is the molar heat of combustion of methane? Cp (H2O) = 4.18 Joule/g 0C. a. 111 kJ b. 13.3 kJ c. 888 kJ d. 8.88 kJ Answer: C ssure. 4. Which is most eff5. Which of the following salt solutions would be eff ective in changing a gas into a liquid? a. Reduce the temperature and pre b. Increase the temperature and pressure. c. Reduce the temperature and increase the pressure. d. Increase the temperature and reduce pressure. Answer: C have the lowest freezing point? a. 0.1 M Na3PO4 b. 0.1 M NaOH c. 0.1 M Na2SO4 d. 0.1 M KNO3 Answer: A 6. The water molecule is frequently referred to as the water dipole because a. ionic bonding holds the molecule together. b. the polar covalent bonds are asymmetrically distributed. c. the non-polar bonds are ionic. d. the covalent bonds are symmetrically distributed. Answer: B 7. Oxygen gas (Molecular weight = 32) diffuses at the rate of 10 mL/min. Under the same conditions of temperature and pressure, how fast will hydrogen (molecular weight = 2) diffuse? a. 20 mL/min b. 160 mL/min c. 40 mL/min d. 10 mL/min Answer: C 8.Because of a hydrogen bond, the hydrogen atom of one water molecule may be a. weakly attracted to the oxygen of a second water molecule b. weakly attracted to the hydrogen of a second water molecule c. strongly attracted to the oxygen of a second water molecule d. strongly attracted to the hydrogen of a second water molecule Answer: A 9. An increase in the amount of 𝑁2𝑁5 will shift the equilibrium to what direction? 2𝑁2(𝑁) + 5𝑁2 (g) 2 𝑁2𝑁5 (g) + HEAT a. to the right b. not at all c. to the left d. reversible Answer: C 10. Among isomeric amines, tertiary amines have the lowest boiling points because: a. they have the highest molecular mass b. they are most basic in nature c. they are more polar in nature d. they do not form hydrogen bonds Answer: D DE JESUS, Allen Christopher B. Section T01 1. Write the IUPAC name of the given compound. A. 4-Bromo-4-methylpent-2-ene B. 4-Bromo-4-methylbut-2-ene C. 4-Bromo-4-methylpent-2-ane D. 4-Bromo-4-methylbut-2-ane ANSWER: A OA na tong number 2 mo 2. Predict the amide substrate for the given Hoffmann bromamide degradation reaction A. B. C. D. ANSWER: C Lumabas to dati 3. The name of below compound according to IUPAC nomenclature system is: A. 1,4-Dichloro-2,3-dibromobut-2-ene B. Dichlorobromobutene C. Dichlorobromobutane D. 2,3-Dibromo-1,4-dichlorobut-2-ene ANSWER: D 4. The IUPAC nomenclature of a given compound is CH2=CH−CH2−CH=CH2 A. penta-2,4-diene B. penta-1,4-diene C. pent-1,4-diene D. pent-2,4-diene ANSWER: B 5. The IUPAC name of the compound is: A. 6-Methyl-3-octanol B. 1-methyl-4-hexanol C. 4-methyl-1-octanol D. 6-methyl-3-hexanol ANSWER: A 6. The gas law which relates the volume of a gas to the number of molecules of the gas is: A. Avogadro's Law B. Gay-Lussac's Law C. Boyle's Law D. Charles' Law ANSWER: A 7. Formula unit mass is calculated in the same way as molecular mass. There is a difference between them. What is it? A. It is used for compounds whose constituent particles are not ions B. It is used for substances whose constituent particles are ions C. It is only used for substances with mass less than 100 D. None of the above ANSWER: B 8. For the combustion of sucrose C12H22O11 + 12O2 → 12CO2 + 11H2O 10.0 g of sucrose and 10.0 g of oxygen are made to react. Which of the following reactants will be the limiting reagent and what amount of the excess reactant will be left? A. Sucrose; 5.02 g B. Sucrose; 2.53 g C. Oxygen; 1.09 g D. Oxygen; 5.02 g ANSWER: C daw sabi ni toppr 9. Consider the following balanced reaction: 2Ca(s) + O2(g) → 2CaO If 60 g of Ca is placed in a reaction chamber with 32 g of O2, which will be the limiting reactant and mass of the excess reactant left? A. Calcium; 8 g B. Oxygen; 16 g C. Calcium; 10 g D. Oxygen; 8 g ANSWER: A 10. CaCl2+Be2CO3→CaCO3+BeCl3 I. Provided the reaction above, if 1.10 g of CaCl2 and 0.85 g of Be2CO3 will be the limiting reactant. II. The limiting reactant in a reaction will always be the reactant that has the lowest mass. Statement I is true, Statement II is true  A. Statement I is true, Statement II is falsetoppr chem 1-30 B. Statement I is false, Statement II is true C. Statement I is false, Statement II is false ANSWER: B PEREZ, Maria Ferrie S. TO1 Good 1. The number of structural isomers possible with the formula C4H9Cl are: a. 4 b. 3 c. 5 d. 2 Answer: A 2. What is the IUPAC name of a. 3-Ethyl-5-propyltoluene b. 1-Ethyl-3-methyl-5-n-propylbenzene c. 3-Ethyl-1-methyl-5-n-propylbenzene d. 3-Ethyl-5-methyl-1-n-propylbenzene Answer: B 3. In which of the following compounds carbon is in highest oxidation state? a. CH3Cl b. CCl4 c. CHCl3 d. CH2Cl2 Answer: B 4. A certain amount of work "W" was done in 10 seconds. If the same amount of work was done in 20 seconds, what would be the change in power? a. W/20 b. W/10 c. W/5 d. W/2 Answer: A 5. Fig. shows a container filled with water. Which of the following statements is correct about pressure of water? a. Pressure at A> Pressure at B> Pressure at C b. Pressure at A=Pressure at B=Pressure at C c. Pressure at A< Pressure at B>Pressure at C d. Pressure at A< Pressure at B NH4Cl(aq) This reaction is endothermic reaction. CH4 + 2O2 ----- > CO2 + 2 H2O This reaction is exothermic reaction. The reaction H2+O2 --> H2O is an exothermic reaction as lot of heat energy is liberated 4. For the equilibrium NH3=1/2N2+3/2H2 The equilibrium constant is 5.What is the equilibrium constant for the equilibrium N2+3H2=2NH3 The equation for the reaction is shown below: NH3=1/2N2+3/2H2 The equilibrium constant for the above reaction is K1, is equal to 5 The equation for the reaction is shown below: N2+3H2=2NH3 The equilibrium constant for the above reaction is K. K=(1/K1)2 =(1/5)2=1/25 Therefore, the value of the equilibrium constant for the reaction is 1/25. high Ka = low pKa = strong acid. High Kb = low pKb = strong base therefore the order of acidity A>C>B>D What is the functional group in CH3CH2OCH3 The functional group −COOR and −COX (X=F, Cl, Br, I) respectively represent: –––––––– methyl ethanoate ethyl methanoate Propylamine ethylamine (i) It is carried out in presence of a strong acid which acts as a catalyst. (ii) The strong acid makes the carbonyl carbon more electrophilic, and hence causes the alcohol, a strong nucleophile to attack on the carbonyl carbon. (iii) The strong acid makes the carbonyl group more electrophilic which is thus attacked easily by an alcohol. a weak nucleophile. (iv) Esterification can be done even in absence of a strong, acid. Which mirror gives rectifiable whatever the distance between the object and mirror is i. Plane mirror. ii. Convex mirror. iii. Concave mirror. iv. Plane or convex mirror. Plane or convex mirror gives rectifiable whatever the distance between the object and mirror. Two bulbs marked 200 watt-250 volts and 100 watt-250 volts are joined in series to 250 volts supply. Power consumed in circuit is: 1. Sulphuric acid and Acetic acid are ___, ___ (Strong-S, Weak-W) acids respectively. A. S, S B. S,W C. W, S D. W, W Answer: B 3. How many carbon atoms are present in 0.35 mol of C6H12O6? A. carbon atoms B. carbon atoms C. carbon atoms D. carbon atoms Answer: C 4. Assertion :If pressure of an ideal gas is doubled and volume is halved, then its internal energy will remain unchanged. Reason: Internal energy of an ideal gas is a function of temperature only. A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion C. Assertion is correct but Reason is incorrect D. Both Assertion and Reason are incorrect Answer: B 5. The correct IUPAC nomenclature of the following compound is: A. 4-Ethylpentan-2-ol B. 2,4-Dimethylpentan-1-ol C. 3-Methylhexan-5-ol D. 4-Methylhexan-2-ol Answer: D 6. Correct IUPAC nomenclature of the given compound is (CH3)3CCH(Br)CH2CH3 [0.77 Mark] A. 3-bromo-4-methylhexane B. 3-bromo-2,2-dimethylpentane C. 3-bromo-4,4-dimethylpentane D. 3-bromo-2-methylhexane Answer: B. 7. What is the correct IUPAC nomenclature of the following compound? A. Propyl propanoate B. Propyl butanoate C. Butyl butanoate D. 2-methyl butanoate Answer: B 9. A man does a given amount of work in 10 sec. Another man does the same no amount of work in 20 sec. The ratio of the output power of first man to the second man is A. 1 B. ½ C. None of these D. 2/1 Answer: D 10. Two persons do the same amount of work. The first person does it in 10 s and the second person, in 20 s. Find the ratio of the power used by the first person to that by the second person. A. 1:1 B. 2:1 C. 1:2 D. 1:3 Answer: B 4. Assertion :The horizontal displacement of a projectile varies linearly with time. Reason: Projectile motion is uniform motion along horizontal and accelerated motion along vertical. A. Assertion is true but the Reason is false. B. Both Assertion and Reason are true, but Reason is not correct explanation of the Assertion. C. Both Assertion and Reason true and the Reason is correct explanation of the Assertion. D. Assertion is false, but the Reason is true. 5. Linear momentum and angular momentum have the same dimensions in: 6.. If the velocity V, acceleration A and force F are taken as fundamental quantities instead of mass M, length L and time T, the dimensions of Young’s modulus Y would be A. FA2V−4 B. FA2V−5 C. FA2V−3 D. FA2V−2 7. Due to an impulse, the change in momentum of a body is 1.8 kg ms−1. If the duration of the impulse is 0.2 s, then what is force produced in it? A. 6 N B. 9 N C. 8 N D. 7 N 8. A body of mass 2 kg is initially moving with a velocity of 4 m/sec. Now a force of 1.25 Newtons acts for 8 sec. Then a force of 2.5 N acts for 8 sec. The final velocity of the body is A. 12.55 m/sec B. 17 m/sec C. 19 m/sec D. 25 m/sec 9. A body of mass 4 kg is moving with momentum of 8 kg ms−1. A force of 0.2 N acts on it in the direction of motion of the body for 10 s. The increase in kinetic energy is: 1. A person sells a radio at a price of 1000 at 20% discount to another person. The second person increases its price by 400 and sells it at 25% discount. What is the percent profit made by the second person? A. 12.5% B. 15% C. 30% D. 22.5% Answer: A 3. Sucrose is composed of α−α− D-glucose and β−β− D-fructose. These two monosaccharide units are held together by α,β -glycosidic linkage. A. True B. False C. Maybe D. Cannot be identified Answer: A 4. Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Sucrose is a disaccharide and a non-reducing sugar. Reason (R): Sucrose involves glycosidic linkage between C1 of β-glucose and C2 of α-fructose. The most appropriate answer from the options given below : A. Both (A) and (R) are true and (R) is the true explanation of (A) B. (A) is false but (R) is true C. Both (A) and (R) are true but (R) is not the true explanation of (A). D. (A) is true but (R) is false Answer: D 5. Mark the correct statement: (a) Sodium metal forms positive ions. (b) Magnesium forms Mg2+ions. (c) Aluminium forms negatively charged ion. A.a, c B. All C. a, b D. b, c Answer: C 6. The closed ring compounds formed by bidentate ligands, on binding to a metal or metal ions, are called: A. Ambidentate B. Chelates C. Monodentate D. None of these Answer: B 7. @) A. 2.24×1024 B. 7.2×1024 C. 9.68×1023 D. 4.32×1023 Answer: B 8. The number of gram molecule of oxygen in 6.02×1024 CO molecules is : A. 10 gm molecules B.1 gm molecules C. 5 gm molecules D. 0.5 gm molecules Answer: C 9. The number of gram-molecule of oxygen which contain 6.02×1024 CO molecules is A. 10 g molecule B. 5 g molecule C. 1 g molecule D. 0.5 g molecule Answer: B 10. According to IUPAC, what is the nomenclature of the following compound? A. 1-Ethylbutane B. 2-Methylbutane C. 1-Methylpentane D. 2-Methylpentane Answer: B 1.In horizontal level ground to ground projectile if at any instant velocity becomes perpendicular to initial velocity then what can you say about projection angle with horizontal. A. for any value of θ it is possible B. θ=45∘ C. θ≥45∘ A. D. θ≤45 2.Define Electromagnetism A. The study of attraction or repulsion between two magnets is called electromagnetism B. The study of electric effects due to magnetic interaction is called electromagnetism C. The study of magnetic effects produced due to electric current is called electromagnetism D. The study of magnetic effects produced due to electric charge is called electromagnetism 3.The study of earth's magnetic field is called A. Geography B. Terrestrial magnetism C. Terrestrial electricity D. Magnetic study 4.Study of relationship between electricity and magnetism is called A. Current electricity B. Electric magnetism C. Magneto electricity D. Electromagnetism 5.Reservoirs producing Hydro electricity are called A. hydro power B. hydro electric power generating stations C. power station D. dams 6.Electricity produced in hydro electric power plant is 2.5 times that of wind power plant means, % of electricity is produced in wind power plant. A. 25 B. 250 C. 175 2. Number of moles of sulfur present in 1 mole of H2SO4 3. How many liters of a solution that is 15 percent salt must be added to 5 liters of a solution that is 8 percent salt so that the resulting solution is 10 percent salt? A. 2 B. 3 C. 4 D. 5 4. All alkalis are bases, but all bases are not alkalis. A. True B. False 7. An atom of phosphorus has the symbol 3115P. How many protons, electrons, and neutrons are present in an atom of phosphorus? (a) Protons-15; Electrons-15; Neutrons-16 (b) Protons-15; Electrons-15, Neutrons-15 (c) Protons-15; Electrons-16; Neutrons-16 (d) Protons-16; Electrons-16; Neutrons-15 (1 Mark) 8. The number of gram molecule of oxygen in 6.02×1024 CO molecules is : 9. Water produces hydrogen and oxygen in the ratio of (mole ratio): 10. Law which relates pressure and volume of gas is : A. Charle's law B. Avogadro's law C. Boyle's law D. ideal gas law 8. IUPAC naming of the compound is: A. 3-octanoic acid B. octane-3-oic acid C. 2-ethylhexanoic acid D. 3-ethylhexanoic acid H2S , a toxic gas with a rotten egg like smell is used for the qualitative analysis. If the solubility of H2S in the water at STP is 0.195 m, then Henry's law constant (in atm) is nearly : 28.94 285 145.2 2890.4 only 4 is correct 3 and 4 are correct 1 and 2 are correct 1 and 3 are correct The quantity of CO2 in 500ml of soda water when packed under 2.5 atm CO2 pressure at 298K is ____ gm ( Henry's law constant 1.67×108 pa at 298K) 1.86 6.4 0.64 18.6 (a) the speed acquired, (b) the distance travelled. 5. Find the value of the angle of emergence from the prism. Refractive index of the glass is √3. A. 90∘ B. 60∘ C. 30∘ D. 45∘ The kinetic energy first increases then decreases The final kinetic energy is less than the initial kinetic energy The initial kinetic energy is unequal to the final kinetic energy Only gases behave like fluids Gases and solids behave like fluids Gases and liquids behave like fluids Only liquids are fluids [Relative molecular mass of ammonium nitrate is 80, H = 1, N= 14, 0= 16], 35% Nitrogen, 65% Oxygen 40% Nitrogen, 60% Oxygen 35% Nitrogen, 60% Oxygen 45% Nitrogen, 45% Oxygen 45% Nitrogen, 55% Oxygen 40% Nitrogen, 65% Oxygen What volume of 12.5 M concentrated HCl is required to make 1 L of 0.1 M HCl solution? Answer: B The name of below compound according to IUPAC nomenclature system is: The IUPAC nomenclature of a given compound is CH2=CH−CH2−CH=CH2 A. penta-2,4-diene B. penta-1,4-diene C. pent-1,4-diene A. Spontaneity of process B. Perpetual machine of 3rd kind C. The total energy of an isolated system remains constant. D. Perpetual machine of 2nd kind A block of mass 5 kg is moving in x− direction with a constant speed of 20 m/s. It is subjected to a retarding force of F=−0.1x joules/meter during its travel from x=20 m to x=30 m. Its final K.E. will be: A. I and II only B. I only C. I and III only D. III only E. II and II only 3.A car of mass 1200 kg is moving with a speed of 22.5 m/s. Calculate its kinetic energy. 4.A truck is moving with the speed of 20m/s and having a momentum of 12,00 kg ms.Find out the mass of the truck? A.240,00kg 5. The fact that, increased wind speed results in reduced air pressure is known as A. Galileo principle B. Bernoulli principle C. Newton principle D. Einstein principle Correct answer: B A metallic ball, dropped from a height undergoes _______________. (A) non-linear motion (B) linear motion (C) random motion (D) circular motion Uniform linear motion is a/an _______ motion while uniform circular motion is a/an _______ motion. Q1. Two weights of 500 g and 250 g are used on a pan while weighing a cup of sugar placed on the other pan of the balance. If the pans balance, then what is the weight of the bag of sugar? In case of force-mass graph where acceleration is constant why force is directly proportional to mass where acceleration is constant? A solution is prepared by dissolving 20 g NaOH in distilled water to give 200 mL of solution. Calculate the molarity of solution A) 1/2 B) 2 C) 1.5 D) 1 (a) Low pressure (b) High pressure (c) Low temperature (d) High temperature A transverse wave is passing through a medium. The maximum speed of the vibrating particle occurs when the displacement of the particle from the mean position is: 10 11 12 13 Correct answer: B. 11 A. 20⁰C and 1 atm B. 0⁰C and 1 atm C. 25 ⁰C and 1 atm D. 0 K and 1 atm 2. At Boyle temperature, Answer: A 4. The two compounds CH3−CH2−O∥C−CH2−CH2−CH3 and CH3−O∥C− CH3 | C | CH3 −CH3 may be considered as: A. position isomers B. metamers C. tautomers D. stereoisomers 6. Three substances P, Q and R are burnt. P burns quickly producing heat and light. Q burns at room temperature on its own. R burns and liberates alot of gases. What type of combustion does P, Q and R undergo? A. P: Rapid combustion Q : Rapid combustion R : Explosion combustion B. P: Spontaneous combustion R : Spontaneous combustion Q : Rapid combustion C. P : Rapid combustion Q : Spontaneous combustion R : Explosion combustion D. P: Spontaneous combustion Q : Rapid combustion R : Explosion combustion 8. In carbon cycle processes, carbon is used by plants to form organic molecules but most carbon is found in the atmosphere as carbon dioxide. Which process is most responsible for removing carbon dioxide from the atmosphere? A. Photosynthesis B. Respiration C. Combustion D. Decopmosition E. Evaporation 10. Correct mathematical formulation of first law of thermodynamics used in thermochemistry is: A. ΔH= ΔU+ ΔnRT B. ΔU= ΔH+ ΔnRT C. ΔH= ΔU− ΔnRT D. ΔH= −ΔU+ ΔnRT 1. The _______________ is an important dimensionless quantity in fluid mechanics that is used to help predict flow patterns in different fluid flow situations A. Viscosity B. Marks number C. Reynolds number D. Strokes formula 2. A cart is moving horizontally along a straight line with constant speed 30 ms−1. A particle is to be fired vertically upwards from the moving cart in such a way that it returns to the cart at the same point from where it was projected after the cart has moved 80 m. At what speed (relative to the cart) must the projectile be fired? (Take g=10 ms−1) A. 10 ms−1 B. 10√8 ms−1 C. 40/3 ms−1 D. None of these Answer: C 3. Newton's law of cooling is a special case of (a) Wien's displacement law (b) Kirchhoff's law (c) Stefan's law (d) Planck's law 4. Which of the following statements is incorrect? (a) static friction is greater than rolling friction (b) sliding friction is less than rolling friction (c) rolling friction is less than static friction (d) static friction is greater than sliding friction 6. In two separate collisions, the coefficients of restitution are e1 and e2 are in the ratio 3:1. In the first collision the relative velocity of approach is twice the relative velocity of separation, then the ratio between relative velocity of approach and the relative velocity of separation in the second collision is: A. 1:6 B. 2:3 C. 3:2 D. 6:1 7. Red light has a longer wavelength than blue light which has a longer wavelength than violet light. When white light passes through a diffraction grating, which order is "bent" by diffraction the most? A. Violet B. Blue C. All colors "bend" the same D. Red E. Green 8. White light strikes a diffraction grating which has 4,120 slits per centimeter. A certain color of light creates a first order bright fringe at an angle of 14.0∘ from straight ahead. What is the wavelength of this light? A. 587nm B. 17,030nm C. 170.3nm D. 985nm E. 436nm 9. Transformers are used (a) in DC circuits only (b) in AC circuits only (c) in both DC and AC circuits (d) neither in DC nor in AC circuits 10. When a permanent magnet is brought near a magnetic material for a short time, the material acquires ________. A. permanent magnetism B. induced magnetism C. electromagnetism D. stronger magnetism If a compound contains two oxygen atoms, four carbon atoms and number of hydrogen atoms is double of carbon atoms, the vapour density of it is An explanation for the correct answer: Thus, the correct option is (B). The temperature should be low and the pressure should be high. Polypropylene is an addition polymer. It is obtained by chain growth polymerisation of propylene. The addition polymer contains all atoms of monomers. Night bulb are bulbs which are designed to use in the night light fixtures. Nightbulbs provide added comfort and security anywhere in your home. Bulbs with less power is used as the nightbulbs. So here, 10 watt bulb is used as the nightbulb. the lens have real focus is convex lens that is converging. so both a and b is the ans. Explanation: In a uniform linear motion, the direction of motion is fixed and since it also has a constant speed, uniform linear motion is not accelerated. In a uniform circular motion, the direction of motion changes continuously. So even if it has a constant speed, it is accelerated. Bernoulli's principle states the following, Bernoulli's principle: Within a horizontal flow of fluid, points of higher fluid speed will have less pressure than points of slower fluid speed. So option A can't be explained by it. The phenomenon of producing an emf in a circuit whenever the magnetic flux linked with a coil changes is 1. How many molecules of ammonia are required to form 8 molecules of urea? During thermal expansion, _______ _______. ANSWER: A&C volume of the substance increases When we increase the temperature of the body, the particles of the substance gain energy, which weakens the force holding them. This results in an increase in length, surface area and volume of the substance. 3. The buffer solutions play and important role in: 5. Which of the following aqueous molal solution have highest freezing point? A. Urea B. Barium chloride C. Postassium bromide D. Aluminium sulphate 6. Consider the gas-phase equilibrium, 2H2O(l) ⇌ 2H2(g)+O2(g) ΔH=241.7kJ, which of the following changes will decrease the equilibrium amount of water? A. Adding more oxygen B. Increasing the temperature at constant pressure C. Increasing the pressure at constant temperature D. Adding catalyst 7. In which of the following compounds nitrogen exhibits highest oxidation state? A. 2-Methylpropan-2-ol B. Isobutyl alcohol C. Butan-2-ol D. Butan-1-ol 10. When 1.0g of fructose C6H12O6(s) is burned in oxygen in a bomb calorimeter, the temperature of the calorimeter water increases by 1.56oC. If the heat capacity of the calorimeter and its contents is 10.0 kJ/oC. Calculate the enthalpy of combustion of fructose at 298K A. +2808kJ/mol D. None of these 1. The following can be arranged in decreasing order of wave number A. AM radio B. TV and FM radio C. Microwave D. Short radio wave 2) Sound waves do not exhibit polarization because, unlike light waves, they are not: A. refractive B. transverse When a permanent magnet is brought near a magnetic material for a short time, the material acquires _ 1. Question 6. The IUPAC nomenclature of the given compound is. a. methanal b. methanol c. methane Answer: A 7. In the following list of acids, separate strong acids from weak acids : [Hydrochloric acid, Citric acid, Acetic acid, Nitric acid, Formic acid, Sulphuric acid.] a. Weak acids → Acetic acid, Nitric acid, Sulphuric acid Strong acids → Citric acid, Formic acid, Hydrochloric acid b. Weak acids → Hydrochloric acid, Formic acid, Citric acid Strong acids → Nitric acid, Sulphuric acid, Acetic acid c. Weak acids → Hydrochloric acid, Nitric acid, Sulphuric acid Strong acids → Citric acid, Formic acid, Acetic acid d. Weak acids → Citric acid, Formic acid, Acetic acid Strong acids → Hydrochloric acid, Nitric acid, Sulphuric acid a. 0.5 M b. 1.0 M c. 2.0 M d. 0.1 M Answer: A 10. What will be the molarity of a solution containing 5g of NaOH in 250 ml solution? A. 0.1 B. 1 C. 0.5 D. 2 Answer: A 1. Which of the following compounds are soluble in H2O? 2. The enthalpy change for the reaction, (g)C2H4 + 3O2(g) ⟶2CO2(g) + 2H2O(g) is called: a. Enthalpy of formation 5. The gas law which relates the volume of a gas to the number of molecules of the gas is: a. Avogadro's Law b. Gay-Lussac's Law c. Boyle's Law d. Charles' Law 6. A gas that follows Boyle's law, Charles' law and Avogadro's law is called an ideal gas. Under what conditions a real gas behaves as ideal gas? 301706_18a4474a0d4c419d8e852f0475738810.png (a) the initial kinetic energy is equal to the final kinetic energy (b) the final kinetic energy is less than the initial kinetic energy (c) the kinetic energy remains constant (d) the kinetic energy first increases then decreases. C. coherent D. dispersive E. longitudinal 3) In a projectile motion if a person wants to increase the maximum height to 2 times but simultaneously want to decrease the range same number of time. He can achieve it by increasing tan of angle of projection by ______ times A. 4 B. 5 C. 6 D. 1 4) A father and his seven year old son are facing each other on ice skates (assume no friction with the ground). With their hands, they push off against one another. Regarding the forces that act on them as a result of this and the accelerations they experience. Which of the following statements is correct? A. Son exerts less force on the father and experiences more acceleration. B. Father exerts more force on the son and experiences less acceleration. C. Father exerts as much force on the son as the son exerts on the father, but the father experiences more acceleration. D. Father exerts as much force on the son as the son exerts on the father, but the father experiences less acceleration. 5) The sound waves after being converted into electrical waves are not transmitted as such because: A. They travel with the speed of sound. B. The frequency is not constant. C. They are heavily absorbed by the atmosphere. D. The height of antenna has to be increased several times. 6) The second law of thermodynamics states that: A. All spontaneous processes are thermodynamically irreversible B. Entropy of the universe is continuously increasing C. Energy can neither be created nor be destroyed D. Energy of the universe remains constant 7) Which of the following correctly completes this nuclear reaction: 147N+42He→X+11H? In the reaction what is X? A. 178O B. 169O C. 178N D. 177N E. 168O 8) A stone is dropped from a building and 2seconds later another stone is dropped. How far apart are these two stones by the time the first one has reached at a speed of 30 m/s? (Take g=10 m/s2) A. 80m B. 100m C. 60m D. 40m 9) Which of the following involve heat transfer through convection? A. Air conditioners B. Exhaust fans C. Microwave ovens D. Home ventilators 10) Find the current passing through 10Ω resistance in the figure give A. 5/31A B. 6/31A C. 4/31A D. none of these The volume of a gas is ______ when the pressure is reduced to half and the absolute temperature is doubled. concave mirror or convex mirror. concave mirror or concave lens. concave mirror or convex lens. concave lens or convex lens. (I) The speed of waves is greater in vacuum than in a medium (II) Waves of different frequencies travel with different speeds in a medium (III) Waves travel with different speeds in different media. 4. Consider the reaction N2 +3H2→2NH3 carried out at constant temperature and pressure. If ΔH and ΔE are the enthalpy and internal energy changes for the reaction, which of the following expressions is true? A. ΔHΔE C. ΔH = zero Answer: D 5. The change in entropy, ΔS, is positive for an endothermic reaction. If enthalpy change ΔH occurs at the same temperature T, then the reaction is feasible: A. at all temperatures B. when ΔH>TΔS C. not feasible at all D. when ΔH A. 4g B. 640 g C. ¼g D. 6.4 g Answer: D.t01al 10.How many moles of Oxygen atoms are present in one mole of the compound: AL2(SO4)3 a. 3 b. 12 c. 24 d. None Answer: B Asok, Paulene T01 GC1 CHEMISTRY 1. When acetylene is treated with HBr, the product is ——— (a) Methyl bromide (b) Ethylene bromide (c) Ethyl bromide (d) Ethylidene bromide Answer: D 2. The strongest oxidizing agent among the following is___________. (a) Oxygen (b) Ozone (c) Fluorine (d) Chlorine Answer: A 3. When NH4Cl is added to NH4OH solution the dissociation of ammonium hydroxide is reduced. It is due to: (a) common ion effect (b) hydrolysis (c) oxidation (d) reduction Answer: A 4. Which of the following molecular formulae belongs to the alkyne series? (a) C7H14 (b) C10H22 (c) C9H16 (d) C16H32 Answer: C 5. Which of the reactions below can result in ketones? (a) Oxidation of primary alcohols (b) Oxidation of secondary alcohols (c) Dehydrogenation of tertiary alcohols (d) Dehydrogenation of primary alcohols Answer: B 6. When benzyl alcohol is oxidized with KMnO4, the product obtained is: (a) Benzaldehyde (b) Benzoic acid (c) CO2 and H2O (d) Benzophenone Answer: B 7. If a solution contains 34.2 g of sugar in 100 g of water. Find the concentration in terms of mass-by-mass percentage of the solution? (a) 20 % (b) 25.48 % (c) 50 % (d) 10 % Answer: B 8. A container contains 10 liters of mixture in which there is 10% sulphuric acid. How much sulphuric acid is to be added to make the solution to contain 25% sulphuric acid? (a) 2 liters (b) 1 liter (c) 4 liters (d) Data inadequate (e) None of these Answer: A 9. At a given temperature, osmotic pressure of a concentrated solution of a substance.......... (a) is higher than that of a dilute solution (b) is lower than that of a dilute solution (c) is same as that of a dilute solution (d) cannot be compared with the osmotic pressure of dilute solution. Answer: A 10. 150 g of a solution (d=1.2 g/ml) contains 63 g of HNO3. What volume of this HNO3 (in mL) solution will be required to react with a NaOH solution, containing 24 g NaOH? Reaction: HNO3 + NaOH → NaNO3 + H2O (a) 75 ml (b) 100 ml (c) 150 ml (d) 50 ml Answer: A PHYSICS 1. According to Bernoulli principle, air pressure decreases with increase in ________ of air. A. speed B. mass C. height D. temperature Answer: A 2. A gas that follows Boyle's law, Charles' law and Avogadro's law is called an ideal gas. Under what conditions a real gas behaves as ideal gas? A. Under low pressure and temperature B. Under high pressure and low temperature C. Under low pressure and high temperature D. Under high pressure and temperature Answer: D 3. A charged particle moving with constant velocity passes through a region of space without any change in its velocity. If E and B represent electric and magnetic fields in that region respectively, what is the E and B in this space? A. E=0 and B=0 B. E=0 and B≠0  C. E≠0 and B=0 D. E≠0 and B≠0 Answer: A 4. A thin convex lens of refractive index 1.5 has 20 cm focal length in air. If the lens is completely immersed in a liquid refractive index 1.6, its focal length will be: A. −160cm B. −100cm C. +10cm D. +100cm Answer: A 5. 200 joules of heat was supplied to a system at constant volume. It resulted in the increase in temperature of the system from 298 to 323 K. What is the change in internal energy of the system? A.400 J B.200 J C.50 J D.150 J Answer: B 6. A system undergoes a process in which work done by the system equals the decrease in its internal energy. The system must have undergone: A. isothermal process B. isobaric process C. isochoric process D. adiabatic process Answer: D 7. Two light bulbs P and Q are identical in all aspects, except that P's filament is thicker than Q's. If the same potential difference is applied to each, then: A. Q will burn brighter because it has the greater resistance. B. P will burn brighter because it has the lower resistance. C. Q will burn brighter because it has the lower resistance. D. P will burn brighter because it has the greater resistance. Answer: B 8. When one end of a magnet is placed near a compass, the pointer (N-pole) of the compass turns and points at the magnet because: A.The pointer points at any end of a magnet B.The end near the compass is a N-pole C.The end near the compass is a S-pole D.A magnet always attracts the pointer of a compass Answer: C 9. A boy rolls a rubber ball on a wooden surface. The ball travels a short distance before coming to rest. To make the same ball travel longer distance before coming to rest, he may A. spread a carpet on the wooden surface. B. cover the ball with a piece of cloth. C. sprinkle talcum powder on the wooden surface. D. sprinkle sand on the wooden surface. Answer: C 10. A force of 100N is applied on a body of mass 2 kg at rest for 3 seconds. What will be velocity of the body after 10 seconds of application of the force assuming no friction? A.120 ms-1 B.170 ms-1 C.150 ms-1 D.100 ms-1 E.200 ms-1 Answer: C Galla, Alian Del S. Section T01 GC1 CHEMISTRY: 1.) A balanced chemical equation is in accordance with- a. Multiple proportion b. Reciprocal proportion c. Conservation of mass d. Definite proportions Ans: (c) Law of Conservation of Mass 2.) The correct balanced equation for the reaction __C2H6O + __O2 → __CO2 + __H2O is- a. 2C2H6O + O2 → CO2 + H2O b. C2H6O + 3O2 → 2CO2 + 3H2O c. C2H6O + 2O2 → 3CO2 + 3H2O d. 2C2H6O + O2 → 2CO2 + H2O Ans: (b) C2H6O + 3O2 → 2CO2 + 3H2O 3.) 10 g of marble(calcium carbonate) was added to 15 g of dilute hydrochloric acid, product formed is calcium chloride, water, and carbon dioxide. Which of the following is true? a. Hydrochloric acid is the limiting reactant b. Hydrochloric acid is the excess reactant c. Calcium carbonate is the excess reactant d. None of the above Ans: (b) Hydrochloric acid is the excess reactant 4.) The reactant which is entirely consumed in the reaction is known as the limiting reagent. In the reaction 2A + 4B⟶3C + 4D, if 5 moles of A react with 6 moles of B then, which is the limiting reagent? a. A b. B c. C d. D Ans: (b) B 5.) Formation of CO and CO2 illustrates the law of ______. a. Law of conservation of mass b. Law of Reciprocal Proportion c. Law of Constant Proportion d. Law of Multiple Proportion Ans: (d) Law of Multiple Proportion 6.) Which of the following is a homogeneous mixture? a. Mixture of soil and water b. Sugar solution c. Mixture of sugar, salt and sand d. Iodized table salt Ans: (b) Sugar solution 7.) Rate of diffusion of a gas is ______. a. directly proportional to its density b. directly proportional to its molecular mass  c. directly proportional to the square of its molecular mass d. inversely proportional to the square root of its molecular mass Ans: (d) inversely proportional to the square root of its molecular mass 8.) At 25 degrees Celsius and 730 mm pressure, 380 ml of dry oxygen was collected. If the temperature is constant, what volume will oxygen occupy at 760 mm pressure? a. 365 ml b. 449 ml c. 569 ml d. 621 ml Ans: (a) 365 ml 9.) A well stoppered thermos flask contains some ice cubes. This is an example of ______ a. Closed system b. Open system c. Isolated system d. Non thermodynamics system Ans: (c) Isolated system 10.) What is the entropy change (in JK -1 mol-1) when 1 mole of ice is converted into water at 0℃? (The enthalpy change for the conversion of ice to liquid water is 6.0 kJ mol-1 at 0℃) a. 20.13 b. 2.013 c. 2.198 d. 21.98 Ans: (d) 21.98 PHYSICS: 1.) The rate of flow of electric charge through any cross-section of a conductor is known as __________. a. Electric flux b. Electric potential c. Electric current d. Electric field Answer: (c) Electric current 2.) Current density is a __________. a. scalar quantity. b. vector quantity. c. dimensionless quantity. d. none of these options Answer: (b) vector quantity 3.) The linear momentum of an object is 250 g cm/s. If the velocity of the object is 5 m/s, then the mass of the object is a. 0.5 g b. 5 kg c. 0.5 mg d. 5 mg Answer: (a) 0.5 g 4.) Which law is also known as the law of inertia? a. Newton’s first law of motion b. Newton’s second law of motion c. Newton’s third law of motion d. Law of conservation of momentum Answer: (a) Newton’s first law of motion 5.) If the mass of the body is doubled and its velocity becomes half, then the linear momentum of the body will a. become double b. remain the same c. become half d. become four times Answer: (b) remain the same 6.) If the displacement is perpendicular to the force, then the work done is said to be ______. a. -1 b. 1 c. 0 d. Infinity Answer: (c) 0 7.) The ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant. It is given by _______.  a. Faraday’s law b. Snell’s law c. Newton’s law d. Murphy’s law Answer: (b) Snell’s law 8.) An aircraft executes a horizontal loop at a speed of 720 km/h with its wings banked at 15°. What is the radius of the loop? a. 15 km b. 23.567 m c. 12.781 m d. 14 km Answer: (a) 15 km 9.) Find the potential energy stored in a ball of mass 5 kg placed at a height of 3 m above the ground. a. 121.20 J b. 147.15 J c. 227.31 J d. 182.21 J Answer: (b) 147.15 J 10.) What is the power utilized when work of 1000 J is done in 2 seconds? a. 100 W b. 200 W c. 20 W d. 500 W Answer: (d) 500 W Allan Ayub C. Ahiron T01 GC1 CHEMISTRY 1. The study of reaction kinetics is called __________. a) Rate of reaction b) Mechanism of reaction c) Factors which affect the rate of reaction d) All of the mentioned Answer: D 2. HCl(aq) + NH3(aq) -> NH4+(aq) + Cl-(aq) The chemical reaction between HCl(aq) and NH3(aq) is represented above. A student combines equimolar amounts of HCl(aq) and NH₃(aq), both solutions initially at 24°C, in a coffee-cup calorimeter. The student observes that the mixture reaches a temperature of 28°C. Based on the experimental results, which of the following can be concluded about the reaction? A) It is an endothermic process, because energy is released by the reaction and is gained by the reaction mixture. B) It is an endothermic process, because energy is absorbed by the reaction and is lost from the reaction mixture. C) It is an exothermic process, because energy is released by the reaction and is gained by the reaction mixture. D) It is an exothermic process, because energy is absorbed by the reaction and is lost from the reaction mixture. ANSWER: C. It is an exothermic process, because energy is released by the reaction and is gained by the reaction mixture. 3. Which phase change is endothermic  A. Deposition B. Freezing C. Fusion D. Condensation ANSWER: C. Fusion 4. The Lucas test was carried out on three different compounds: A, B, and C. Compounds A and B were turbid at ambient temperature, while compound C did not become turbid until it was heated. Which one of the compounds is tertiary in structure? a) A b) Cannot be determined c) C d) A and B ANSWER: B. Cannot be determined 5. Which of the following compounds is formed when secondary alcohols are oxidised by [O]? a) Ether b) Aldehyde c) Ketone d) Amine ANSWER: C. Ketone 6. __________ possesses the properties of both alkali metals and halogens. a) Helium b) Hydrogen c) Sodium d) Chlorine ANSWER: B. Hydrogen 7. AgCl fails to pass which of the following tests? a) Alkaline test b) Acidic test c) Chromyl chloride test d) Baeyer’s reagent test ANSWER: C. Chromyl chloride test 8. What form does nitrogen take in plants? a) Ammonia b) Amide c) Nitrate d) Nitrite ANSWER: C. Nitrate 9. What is the most basic aromatic amine’s common name? a) Benzenamine b) Benzylamine c) Aniline d) Aminobenzene ANSWER: C. Aniline 10. Which of these substances has a lower melting point than amine? a) Alcohol b) Ether c) Carboxylic acid d) Phosphine ANSWER: D. Phosphine PHYSICS 1. Which of the following is true about the magnitude of horizontal component of velocity in a ground to ground projectile motion. A. first decreases upto maximum height then increases B. highest at the topmost point C. remain same throughout the motion D. depends on angle of projection Answer: C. Remain same throughout the motion 2. In horizontal level ground to ground projectile if at any instant velocity becomes perpendicular to initial velocity then what can you say about projection angle with horizontal. A.for any value of θ it is possible B. θ=45∘ C. θ≥45∘ D. θ≤45 Answer: B. for any value θ it is possible 3. A projectile is thrown with initial velocity of 20 m/s at an angle of 37 degrees from horizontal. Time after which velocity becomes perpendicular to acceleration is A.1.2 sec B. 2.4 sec C. 0.5 sec D. 0.6 sec Answer: A. 1.2 sec 4. A pendulum undergoes (a) periodic motion. (b) linear motion. (c) curvilinear motion. (d) rotational motion. Answer: A. Periodic Motion 5. A car moving on a straight road is in (a) curvilinear motion (b) rectilinear motion (c) periodic motion (d) rotational motion Answer: B. Rectilinear Motion 6. A body of mass 5kg falls from a height of 10m to 4m. (Take g=10ms−2). Calculate the total energy possessed by the body at any instant? A. 5J B. 0J C. 500J D. 4300J Answer: C. 500 J 7. The kinetic energy possessed by a body of mass m, moving with a velocity v is equal to 12mv2, provided: A The body moves with velocities comparable to that of light. B The body moves with velocities negligible compared to the speed of light. C The body moves with velocities greater than that of light. D None of the above statements is correct. Answer: A. The body moves with velocities comparable to that of light 8. A body X of mass 5kg is moving with velocity 20ms−1 while another body Y of mass 20kg is moving with velocity 5ms−1. Compare the momentum of the two bodies. A 1:4 B 4:1 C 1:2 D 1:1 Answer: C. 1:2 9. A body of mass 5 kg is moving along the x-axis with a velocity 2 ms−1. Another body of mass 10 kg is moving along the y-axis with a velocity √3 ms−1. They collide at the origin and stick together. The final velocity of the combined mass is A √3 ms^−1 B (√3+1) ms^−1 C 4/3 ms^−1 D 3/4 ms^−1 Answer: C. 4/3 ms^-1 10. A 2kg body and 3kg body are moving along the X-axis. At a particular instant the 2kg body is 1m from the origin and has the velocity of 3ms−1 and 3kg body is 2m from the origin and has a velocity of −1ms−1. The position of the center of mass of the system is: A 1m B 1.6m C 2.2 m D0 Answer: B. 1.6m Domingo, Vincent Joseph T01 GC1 Chemistry 1. Aspirin ( C9H8O4) is prepared by reacting salicylic acid ( C7H6O3) and acetic anhydride ( C4H6O3). C7H6O3 + C4H6O3 → C9H8O4 + C2H4O2 How many moles of salicylic acid should be used to prepare six 5-grain aspirin tablets? (1 g = 15.5 grains) A. 1.0 B. 2.0 C. 0.01 D. 0.1 Ans:(C)0.01 2. The partial pressure of ethane over a saturated solution containing 6.56×10−2g of ethane is 1 bar. If the solution contains 5×10−2g of ethane, then what will be the partial pressure of the gas? A. 1.0 bar B. 0.0118 bar C. 0.762 bar D. 2.69 bar Answer:(C)0.762 bar 3.What is the mass of urea required for making 2.5 kg of 0.25 molal aqueous solution? A. 37g B. 27.5g C. 29g D. 55g Answer:(A)37g 4.10g of NaOH required a certain amount of H2SO4 for complete neutralization. Calculate the amount of H2SO4 required. A. 24.5 g B. 10 g C. 49 g D. 12.25 g Answer:(D)12.25 g 5. Volume of 0.50 MNaOH solution required to react with 40.0 mL of 0.05 MH2SO4 solution is : A. 40.0mL B. 80.0mL C. 20.0mL D. 8.0 mL Answer:(D)8.0mL 6.What is the product obtained when sodium ethoxide reacts with isobutyl chloride? A. Tert-Butyl alcohol B. Tert-Butyl ethyl ether C. Isobutyl ethyl ether D. Isobutylene Answer:(D)Isobutylene 7. The increasing order of solubility is : A. NaHCO3,KHCO3,CaCO3 B. KHCO3,NaHCO3,CaCO3  C. CaCO3,NaHCO3,KHCO3 D. CaCO3,KHCO3,NaHCO3 Answer :(C)CaCO3,NaHCO3,KHCO3 8. C2H4(g) + H2(g) ⇋C2H6(g) ; ΔH = − 31.7kcal. The equilibrium concentration of C2H4 in the following reaction can be increased by: A. removal of C 2 H 6 B. addition of H 2 C. increase in temperature D. increase in pressure Answer:(C)increase in temperature 9. In the combustion of 4g of CH4 , 2.5 Kcal of heat is liberated. The heat of combustion of CH4 is: A. 20 Kcal. B. 5 Kcal. C. 2.5 Kcal. D. 10 Kcal. Answer:(D)10Kcal 10.How many grams of H2SO4 are there in 1,000 grams of a 10% solution? Given (1 mol of H2SO4 = 98g) A. 100 B. 21 C. 89 D. 66 E. 93 Answer:(A)100 Physics 1. A person sitting on the ground floor of a building notices through the window, of height 1.5 m, a ball dropped from the roof of the building and crosses the window in 0.1 s. What is the velocity of the ball when it is at the topmost point of the window? (g-10 m/s2) A. 20 m/s B. 15.5 m/s C. 14.5 m/s D. 4.5 m/s Ans:(C) 14.5 m/s 2. What is the centripetal acceleration of the ball if the instantaneous velocity of the ball is doubled? A. a/2 B. a C. 2a D. 4a E. a/4 Ans:(D) 4a 3. An infinitely long straight conductor carries a current of 5 A as shown. An electron is moving with a speed of 105 m/s parallel to the conductor. The perpendicular distance between the electron and the conductor is 20 cm at an instant. Calculate the magnitude of the force experienced by the electron at that instant. A. 8×10−20 N B. 4×10−20 N C. 8π×10−20 N D. 4π×10−20 N Ans.(A) 8×10−20 N ‘ 4. An electric lift with a maximum load of 2000 k g (lift + passengers) is moving up with a constant speed of 1.5 m s − 1. The frictional force opposing the motion is 3000 N. The minimum power delivered by the motor to the lift in watts is: ( g = 10 m s − 2 ) A. 23000 B. 20000 C. 34500 D. 23500 Anw. (C) 34500 5. An elevator can carry a maximum load of 1800 k g ( e l e v a t o r + p a s s e n g e r s ) is moving up with a constant speed of 2 m s − 1. The frictional force opposing the motion is 4000 N. What is the minimum power delivered by the motor to the elevator? A. 22 kW B. 44 kW C. 66 kW D. 88 kW Ans. (B) 44 kW 6. An elevator in a building can carry a maximum of 10 persons, with the average mass of each person being 68 kg. The mass of the elevator itself is 920 kg and it moves with a constant speed of 3 ms − 1. The frictional force opposing the motion is 6000 N. If the elevator is moving up with its full capacity, the power delivered by the motor to the elevator ( g = 10 ms − 2 ) must be at least A. 56300 W B. 62360 W C. 48000 W D. 66000 W Ans. (D) 66000 W 7. Sound waves are not transmitted to long distance because, A. they have constant frequency B. they are absorbed by the atmosphere C. the height of antenna required, should be very high  D. velocity of sound waves is very less Ans.(B) they are absorbed by the atmosphere 8. Sound can travel as both longitudinal and transverse waves in A. solids B. liquids C. gases Ans. (A) Solids 9. The amount of heat necessary to raise the temperature of 0.2 mol of N2 at constant pressure from 37 o C to 337 o C will be A. 1746 J B. 746 J C. 1543 J D. 876 J Ans. (A) 1746 J 10. Calculate change in internal energy if Δ H = − 92.2 kJ, P = 40 atm and ΔV = −1L A. −42kJ B. −88kJ C. +88kJ D. +42kJ Ans. (B) −88kJ Pada, Ma. Lutgarda (T01 - GC2) CHEMISTRY 1.Complete and balance the given chemical reaction. CH3 CH2 CH2 CH3 (g) + O2 (g) → A. CH3 CH2 CH2 CH3 (g) + 4O2 (g) → 4CO2 (g) + 5H2 (g) B. 3CH3CH2CH2CH3 (g) + 6O2 (g) → 12CH3 CH2 CH2O CH3 (g) C. CH3 CH2 CH2 CH3 (g) + O2 (g) → CH3 CH2O (g) + CH3 CH2O (g) D. 2CH3 CH2 CH2 CH3 (g) + 13O2 (g) → 8CO2 (g) + 10H2O (l) 2. Categorize the following acids and bases into strong acid, weak acid, strong base, and weak base: NaOH, CH3COOH, HCl, NH4OH Answer: NaOH – Strong base CH3COOH – Weak acid HCl – Strong acid NH4OH – Weak base 3. The half-life of second order reaction is: A. proportional to the initial concentration of reactants B. inversely proportional to the square of the initial concentration of the reactants C. inversely proportional to the initial concentration of reactants D. independent of the initial concentration of reactants Solution: t1/2 ∝ 1/an−1 ; where, a = initial concentration, n = order t1/2 (second order) ∝ 1/a 4. Which reactant is limiting and which is in excess? A. Limiting - K2PtCl4, Excess - NH3 B. Limiting - NH3 C. Exact molar ratio D. Limiting - would he decided by the quantity of the product formed Solution: (Tenten Shorcut is the key :>) 10g of K2PtCl6 = 10/417 mol = 0.024 mol (limiting) 10 g NH3 = 10 /17 = 0.588 mol (excess) K2PtCl6 consumed = 0.024 mol NH3 consumed = 0.048 mol NH3 unreacted = 0.588 − 0.048 = 0.54 mol 5. What is the correct IUPAC naming of CHF2CBrClF? A. 1-Bromo-1-chloro-1,2,2-trifluoroethane B. 1-Bromo-1-chloro-1,2,2-trifluoroethene C. 2-Bromo-2-chloro-1,1,2-trifluoroethane D. 2-Bromo-2-chloro-1,1,2-trifluoroethene 6. What is the percent composition of Cu2S? A. 80% Cu, 20% S B. 50% Cu, 50% S C. 20% Cu, 80% S D. 66% Cu, 34% S E. 34% Cu, 66% S Solution: The atomic masses of Cu and S are 63.5 g/mol and 32.1 g/mol respectively. 1 mole of Cu2S will weigh 2 (63.5) + 32.1 = 159.1 g The mass of Cu = 2 × 63.5 = 127 g The percent composition of Cu = 127 × 100 / 159.1 = 80 % The percent composition of S = 100 − 80 = 20 7. What type of bond is formed if the atoms involved has electronegativity difference as 2? A. Covalent B. Metallic C. Ionic D. Polar covalent E. Hydrogen bonding 8. Choose the correct alternative: The gas law which relates the volume of a gas to the number of molecules of the gas is: A. Avogadro's Law B. Gay-Lussac's Law C. Boyle's Law D. Charles' Law 9. A 1.250 g sample of octane (C8H18) is burned in excess of oxygen in a bomb calorimeter. The temperature of calorimeter rises from 294.05 K to 300.78 K. If heat capacity of calorimeter and its contents is 8.93 k J / K, calculate the heat transferred to calorimeter. Solution: C8H18 + 25/2 O2 → 8CO2 + 9H2O Mass of octane, m = 1.25 g or 0.00125 kg Heat capacity, C = 8.93 k J K – 1 Change in temperature, Δ T = 300.78 − 294.05 = 6.73 K Heat transferred, Q = mCΔT = 0.00125 × 8.93 × 6.73 = 0.075 k J Enthalpy of combustion is the enthalpy of reaction. In reaction 1 mole of octane is used So, enthalpy of 1 mole of octane can be calculated as follows: For 1.25 g heat transferred is 0.075 k J For 1 mole or 114 g of octane heat transferred will be: = 0.075 / 1.25 × 114 = 6.84 k J 10. The change in entropy, Δ S is positive for an endothermic reaction. If enthalpy change Δ H occurs at the same temperature T, then the reaction is feasible: A. at all temperatures B. when Δ H > T Δ S C. not feasible at all D. when Δ H < T Δ S PHYSICS 1. A standing man, observes rain falling with velocity of 20 m / s at an angle of 30 ∘ with the vertical. Find the velocity with which the man should move so that rain appears to fall vertically to him.  A. 20m/s B. 16m/s C. 10m/s D. 7m/s 2. A standing man, observes rain falling with velocity of 20 m/s at an angle of 30 ∘ with the vertical. Now if he further increases his speed, rain again appears to fall at 30 ∘ with the vertical. Find his new velocity. A. 10√3m/s B. 20m/s C. 40√3m/s D. 10m/s 3. A metallic ball, dropped from a height undergoes ___________. A. non-linear motion B. linear motion C. random motion D. circular motion [1 Mark] 4. Himanshu passes a parallel beam of light through a concave lens. He observes that when the ray of light passes through the lens it___________. A. Diverges B. Converges C. is parallel  D. meets at a point 5. The light rays parallel to the principal axis meet at point M after passing through a convex lens. What is the power of the lens? A. +5D B. +0.5D C. +2D D. -2D Solution: A convex lens converges the parallel rays coming from an object at infinity, and the image is formed at its principal focus. f = 20 cm = 0.2m P = 1/f P = 1/0.2 P = +5D 6. Which of the following is/are true about force: A. Force will always change the magnitude of velocity B. Force will always change the direction of the velocity C. S.I unit of force is Newton D. All of the above Solution: Force does not always change the magnitude of the velocity. Example: Centripetal force, It changes the only direction of motion but not the magnitude of the velocity. Force does not always change the direction of motion. Example: Linear motion, the friction only reduces the velocity of the body but does not change the direction. SI unit of force is Newton. 7. Compute the speed of 2kg ball having kinetic energy of 4 J.  Solution: KE = ½ mv2 v2 = 2KE / m v2 = 2(4) / 2 v2 = 4 v = √4 v = 2 ms-1 8. A ball of mass 5kg is having a kinetic energy of 50 J. Determine the magnitude and direction of momentum of ball. Solution: Relation between momentum and Kinetic energy, K.E.= p2 / 2m p=momentum of the ball m=mass of the ball Therefore, P2=K.E.*2*m K.E.=50J p2=50*2*5=500 p= 500=105 Ns  Since the direction of motion (velocity) is not given, the direction of the momentum cannot be found. Hence, the Momentum of the ball is 105 N s 9. Water flows through a pipe of diameter 8.0 c m with a speed of 10.0 m / s. It then enters a smaller pipe of diameter 3.0 cm. What is the speed of the water as it flows through the smaller pipe? A. 1.4 m/s B. 2.8 m/s C. 27 m/s D. 71 m/s 10. Four 18Ω resistors are connected in parallel across a 25.0 V ideal battery. What is the current through the battery? Solution: Itotal = V / Req = 4V / R = 4(25.0V) / (18.0Ω) = 5.56 A Angeles, Sherilyn Section T01-GC1 PHYSICS 1. A car initially at rest starts moving with a constant acceleration of 0.5 ms -2 and travels a distance of 25 m. Find its final velocity. a. 2.5 ms-1 b. 10 ms-1 c. 5 ms-1 d. 0 ms-1 Answer: B Rationale: Vf2 = Vi2 + 2ad = 2 (0.5)(25) Vf = √25 Vf = 5 2. A ball is projected vertically up with a speed of 50 m/s. Find the maximum height, the time to reach the maximum height, and the speed at the maximum height. (g = 10 m/s2) a. 125 m b. 110 m c. 95 m d. 150 m Answer: A Rationale: Vf = Vi + at h = 1/2at2  0 = 50 + (10)t h = (½)(10)(25) 50 = 10t h = 125 m T=5 Hence, at maximum height final velocity is zero, time taken 5 sec and maximum height is 125 m. 3. According to the law of conservation of momentums, the initial and final momentum of a system will always remain a. Zero b. Same c. Different d. Non-zero Answer: B Rationale: In an isolated system (where there is no external force), the total momentum remains conserved. 4. 5 g of copper was heated from 20° to 80°. How much energy was used to heat Cu? (Specific heat capacity of Cu is 0.092 cal/g°C) a. 50 cal b. 27.6 cal c. 35 cal d. 25.7 cal Answer: B  Rationale: Q = MC△T = (5)(0.092)(60) 5. The amount of heat required to raise the temperature of 75 g of ice at 0°C to water at 10°C is: (latent heat of fusion of ice is 80 cal/g, specific heat capacity of water is1 cal/g°C) a. 750 kcal b. 6.75 x 103 kcal c. 60 x 103 kcal d. 6.75 kcal Answer: D 6. The total resistance of the circuit is: a. 15 Ω b. 30 Ω c. 10 Ω d. 20 Ω Answer: C Rationale: V = IR 4 = 0.4R R = 10 7. The total resistance of this circuit is: a. 15 Ω b. 25 Ω c. 18 Ω d. 20 Ω 8. What is the total curreAnswer: C 9. nt flowing the circuit shown in number 5? a. 0.55 A b. 0.78 A c. 0.63 A d. 0.67 A Answer: D 10. A physics book is located 25.0 cm in front of a convex mirror. The (virtual) focal length of the mirror is 20.0 cm. Where is the image of the book formed, relative to the mirror? a. 100 cm in front of the mirror b. 11.1 cm at the back of the mirror c. 100 cm at the back of the mirror d. 11.1 cm in front of the mirror Answer: B Rationale: given: u = - 25 cm; f = 20 cm  Use 1/v + 1/u = 1/f 11. The branch of physics which deals with the study of fluids at rest is called a. Thermodynamics b. Thermal expansion c. Hydrostatistics d. Hydrodynamics Answer: C BACHITA, KEZIAH DESA B. (T01-GC2) CHEMISTRY 1) Equivalent weight of NH3, in the change N2 → NH3 is A. 17 B. 17/2 C. 17/3 D. 17/6 Answer: C 2) What will be the volume (in liters) of oxygen liberated (at STP) when 17 grams of H202 decompose on heating?  A. 5.6 L B. 22.7L C. 11.35L D. 45.4L Answer: A 3) When 280g of N is converted into ammonia. ZkJ of heat is evolved. What is the enthalpy of formation of ammonia? A. 202 ZkJ B. -0.05 ZkJ C. 280 ZkJ D. -2.8 ZkJ Answer: B 4) When 4 g of iron is burnt to ferric oxide at constant pressure, 29.28 kJ of heat is evolved. What is the enthalpy of formation of the formation of ferric oxide? (Atomic Mass of Fe = 56 g/mole) A. -81.98 kJ B. -819.8 kJ C. -40.99 kJ D. +819.8 kJ Answer: B 5) Calculate the percentage composition of iron in ferric oxide, Fe2O3. [Atomic mass of Fe = 56].  A. 70% B. 50% C. 40% D. 60% Answer: A 6) The heat evolved in the combustion of methane is given by the following equations: CH4(g) + 2O2(g) → CO2(g) + H2O(l); /_\H = -890.3kJ How many grams of methane would be required to produce 445.15kJ of heat of combustion? A. 8g B. 4g C. 12g D. 16g Answer: A 7) Methane undergoes a combustion reaction according to the reaction CH4(g) + 2O2(g) → CO2(g) + 2H2O(l). How many grams of methane gas were burned if 67.2 L of carbon dioxide gas were produced in the reaction? (assume STP) A. 16 grams B. 48 grams C. 3 grams D. 132 grams E. 22.4 grams Answer: B 8) To what temperature must a neon gas sample be heated to double the pressure, if the initial volume of a gas at 75°C is decreased by 15%? A. 319°С B. 592°С C. 128°С D. 90°C E. 60°C Answer: A 9) An aqueous solution of a salt of a weak base and a strong acid is acidic because of: A. electrolysis B. hydrolysis C. dissociation D. none of the above Answer: B 10) The pH of an aqueous solution of 0.1M solution of the salt of a weak base (Kb = 1.0 × 10^-5) and a strong acid is: A. 5.0 B. 4.5 C. 5.5 D. 6.0 Answer: A PHYSICS 1) A gas in a flexible container initially has a volume of 32.0 L. If we decrease the pressure of the gas from 4.0 atm to 1.0 atm and decrease the temperature from 273 degrees Celsius to 0 degrees Celsius, what is the new volume of the gas? A. 32.0 L B. 64.0 L C. 0L D. 8.0 L E. 16.0 L Answer: B 2) A boy throws up a ball in a stationary lift and the ball returns to his hands in 10 s. Now if the lift starts moving up at a speed of 5 m/s. The time taken for a ball thrown straight up to return to his hands is: A. more than 10 s B. insufficient information given C. less than 10 s D. equal to 10 s Answer: D 3) The input power to a machine is 1500 W. And its efficiency is 80%. Then the output power by the machine is : A. 1100 W B. 1200 W C. 800 W D. 1500 W Answer: C 4) A kid is working on his physics project. He wants to decrease the speed of the motor by decreasing the current through it. What can he do to achieve this? A. Decrease the strength of the battery B. Reverse the polarity of the battery C. Increase the strength of the battery D. Increase the resistance Answer: D 5) If the horizontal range is four times the maximum height attained by a projectile then the angle of projection is A. 90° B. 60° C. 45° D. 30° Answer: C 6) If you apply 12 N force to a block on a horizontal surface then it starts its movement. Now if you apply 15 N force to it then what will be the frictional force on it? A. Equal to 12 N B. Less than 12 N C. Greater than 12 N D. Equal to 0 N Answer: B 7) A wave is traveling on a string with the frequency 4 cycles per second, and its speed is 0.08 meters per second. Calculate the wavelength of the wave? A. 0.25 m B. 0.55 m C. 3.125 m D. 0.02 m E. 12.55 m Answer: D 8) A wave is traveling on a string with the following given parameters, a frequency of 6.oHz, an amplitude of o.2m, and a wavelength of o.5m. Find out the wave speed? A. 0.1m/s B. 0.6m/s C. 1.2m/s D. 2.4m/s E. 3.0m/s Answer: E 9) A simple pendulum takes 32 s to complete 16 oscillations. What is the time period of the simple pendulum? A. 2s B. 4s C. 0.5 s D. 1s Answer: A 10) A converging lens of focal length 30 cm and diverging lens of focal length 20 cm are kept 15 cm apart with their principal axes coinciding. Where shall an object be placed to form an image at infinity? A. 60 cm from converging lens B. 60 cm from diverging lens C. 210 cm from diverging lens D. 210 cm from converging lens Answer: B and D PETRAS, CHRISTLE-ANN F. PETRAS (T01-GC1) CHEMISTRY 1. The statement that is true for the long form of the periodic table is - (A) It reflects the sequence of filling the electrons in the order of sub-energy level s, p, d and f. (B) Electron affinity increases from left to right in a period. (C) It reflects trends in physical and chemical properties of the elements. (D) Non-metallic character decreases down the group. Choose the correct statement :- A. ABD B. ACD C. ABC D. ABCD Ans. D 2. With reference to the variation of properties in the Periodic Table, which of the following is generally true? (A) Atomic size increases from left to right across a period. (B) Ionisation potential increases from left to right across a period. (C) Electron affinity increases going down a group. (D) Electronegativity increases going down a group. Ans. B 3. Which of the following is true for the Pauli Exclusion Principle? A. The lowest-energy orbitals are filled first.  B. The orbitals of equal energy (degenerate) are occupied with one electron each before pairing of electrons starts. C. No two electrons of the same atom can have all the four quantum numbers the same. D. None of the answer Ans. C 4. Which of the following is always true for an isothermal expansion of an ideal gas? A. △S=0 B. △U=0 C. q=0 D. w=0 Ans. B (B) ΔU=0 In an isothermal process, the temperature remains constant. Therefore,ΔU=ΔH=0 5. Identify the correct statement regarding a spontaneous process. A. Lowering of energy in the reaction process is the only criterion for spontaneous. B. Endothermic processes are never spontaneous. C. Exothermic process are always spontaneous  D. For a spontaneous process in an isolated system, the change in gibbs free energy is zero. Ans. C 6...≥/ A. 0.682Jg−1K−1 B. 582Jg−1K−1 C.0.582Jg−1K−1 D.0.0582Jg−1K−1 Ans. C Heat lost by the metal = Heat gained by water ⇒mmSmΔTm=mwSwΔTw ⇒50×Sm×(423−293)=100×4.2×(293−284) ⇒Sm=0.582Jg−1K−1 7. Fehlings solution is used to detect A. Sucrose  B. Glucose C. Fat D. Starch Ans. B 8. The heat liberated when 1.89g of benzoic acid is burnt in a bomb calorimeter at 25oC and it increases the temperature of 18.94kg of water by 0.632oC. If the specific heat of water at 25oC is 0.998cal/g/deg, the value of the heat of combustion of benzoic acid is A. 881.1kcal B. 771.124 kcal C. 981.1kcal D. 871.2kcal Ans.B Given: Weight of benzoic acidTemperature of bomb calorimeterMass of water (m)Increase in temperature and Specific heat of water, (s)=0.998cal/g/deg We know that, heat gained by water or heat liberated by benzoic acid (Q)=msΔT Q=18940×0.998×0.632=11946.14cal Since 1.89g of acid liberates 11946.14cal of heat, therefore, heat liberated by 122g of acid is =11946.141.89×122 =771126.5cal=771.12cal (where 122g is the molecular weight of benzoic acid)  9. The pH of 0.1 M solution of the following salts increases in order A. NaCl < NH4Cl < NaCN < HCl B. NaCN < NH4Cl < NaCl < HCl C.HCl < NaCl < NaCN < NH4Cl D.HCl < NH4Cl < NaCl < NaCN Ans.D 10. Three reactions involving H2PO4– are given below : i) H3PO4 + H2O → H3O+ + H2PO4– ii) H2PO4–+ H2O → HPO42- + H3O+ iii) H2PO4– + OH–→ H3PO4 + O2- In which of the following above H2PO4– act as an acid? A.ii only B.i) and ii) C.iii) only D. i) only Ans.A PHYSICS 1.During a collision between two objects, the kinetic energy is conserved. Which statement best describes the momentum after the collision? A. The momentum may be conserved B. The momentum must be conserved C. The momentum decreases by half D. The momentum increases to double the original value E. The momentum equals the kinetic energy Ans. B 2. A ball moves in a frictionless inclined table without slipping. The work done by the table surface on the ball is A. Negative B. Zero C. Positive D. None of the options Ans. B 3. Which law describes the orbits of planets around the sun? A.Newton’s law B.Faraday’s law  C.Kepler’s law D.Kirchoff’s Law Ans. C 4. Which of the following is conserved when light waves interfere? A.Intensity B.Amplitude C.Phase D.None of the above Ans. D 5. Two light sources are said to be coherent when both the sources of light emit light of A.The same amplitude and phase B.The same intensity and wavelength C.The same speed D.The same wavelength and constant phase difference Ans.D 6. A body dropped from a height h with initial velocity zero, strikes the ground with a velocity 3m/s. Another body of same mass dropped from the same height h with an initial velocity of 4m/s. The final velocity of second mass, with which it strikes the ground is A. 5m/s B. 12m/s  C. 3m/s D. 4m/s Ans. A 7. The process in which a heavy nucleus splits into two lighter nuclei, when hit by neutrons is: A. Nuclear fission B. Nuclear fusion C. Thermal fission D. Radioactive decay Ans. A 8. An electromagnetic wave can be produced when the charge is A. moving in a circular orbit B. moving with a constant velocity C. falling in an electric field D. Both (a) and (c) Ans.D 9.A count rate meter shows a count of 240 per minute from a given radioactive source. One hour later the meter shows a count rate of 3.0 per minute. The half life of the source is A. 120 min  B. 30 min C. 80 min D. 20 min Ans. D 10.A thin convex lens of refractive index 1.5 has 20cm focal length in air. If the lens is completely immersed in a liquid refractive index 1.6, its focal length will be : A. −100cm B. +10cm C. −160cm D. +100cm Ans.C PASCUAL 1. A charge is placed at the center of the line joining two equal charges Q. the system of three charges will be in equilibrium if q is equal to* a. -Q/2 b. -Q/4 c. +Q/2 d. +Q/4 2. Four charges equal to -Q are placed at the four corners of a square and a charge q is at its centre. If the system is in equilibrium the value of q is  a. -Q/4 (1+ 2√2) b. Q/4 (1 + 2√2 c. Q/2 (1+2√ 2 d. -Q/2 (1+2 √2 3. What is the amount of charge possessed by 1 kg of electrons ? a. 1.76 ×1011C b. 1.76 × 10−9C c. 1.76 ×10−7C d. 1.76×10−5C 4. The maximum electric field strength E due to a uniformly charged ring of radius r, happens at a distance x, where value of x is (x is measured from the centre of the ring) a. x= R b. x= R/2 c. x= R/√2 d. x= √2𝑅 5. An infinitely long straight conductor carries a current of 5 A as shown. An electron is moving with a speed of 105m/s parallel to the conductor. The perpendicular distance between the electron and the conductor is 20 cm at an instant. Calculate the magnitude of the force experienced by the electron at that instant. a. 8 x 10^-20 N b. 4 x10 ^-20 N c. 8𝜋 x 10^-20 N d. 4𝜋 x10^-20 N 6. A stone is thrown in a vertically upward direction with a velocity of 5 m/s. If the acceleration of the stone during its motion is 10 m/s in the downward direction, what will be the height attained by the stone and how much time will it take to reach there? a. 0.5 s b. 0.4 s c. 1.2 s d. 0.3 s 7. A particle is released from height S from the surface of the Earth. At a certain height, its kinetic energy is three times of its potential energy. The height from the surface of earth and the speed of the particle at that instant are respectively a. s/4, √3𝑅𝑅/2 b. s/4, √3𝑅𝑅 c. s/4, √𝑅𝑅/2 d. s/2, √3𝑅𝑅/2 The force between two point charges in air is100 N. If the distance between them is increased by 50%, then the force between two charges will be nearly equal to(1) 50 N(3) 100 N(2) 56 N(4) 44 N a. 44.4 N b. 45 N c. 40.5 N d. 46 N CHEMISTRY 1. A 1.250 g sample of octane (C8H18) is burned in excess of oxygen in a bomb calorimeter. The temperature of the calorimeter rises from 294.05 K to 300.78 K. If the heat capacity of the calorimeter and its contents is 8.93kJ/K, calculate the heat transferred to the calorimeter. a. 6.84 kJ b. 7 kJ c. 5 kJ 2. The ratio of specific heat capacity to molar heat capacity of the body a. Is a universal constant b. Depends on the mass of the body c. Depends on the molecular weight of the body d. Is dimensions 3. In which of the following sets, all the properties belongs to same category (all extensive or all intensive) a. Mass, volume, pressure b. Temperature, pressure, volume c. Heat capacity, density, entropy d. Enthalpy, internal energy volume 4. The gas law which relates the volume of a gas to the number of molecules of the gas is a. Avogadro`s law b. Gay-Lussacs Law c. Boyles Law d. Charles` Law 5. A gas that follows Boyle`s Law, Charles Law and Avogadros Law is called an ideal gas. Under what conditions a real gas behaves as ideal gas. a. Under low pressure and temperature b. Under high pressure and low temperature c. Under low pressure and high temperature d. Under high pressure and temperature 6. What is the functional group in alcohol a. -OH b. -CN c. -NH2 d. -NC CO 1. Ethane, with the molecular formula C2H6 has (a) 6 covalent bonds. (b) 7 covalent bonds. (c) 8 covalent bonds. (d) 9 covalent bonds. Answer: B 2. The number of lone pairs of electrons on SF4, CF4 and XeF4 are: 1. 2,0 and 1 lone pairs of electrons respectively 2. 1,1 and 1 lone pairs of electrons respectively 3. 0,1 and 2 lone pairs of electrons respectively 4. 1,0 and 2 lone pairs of electrons respectively Answer: d 3. The percentage of carbon in a molecule of carbon monoxide is 1. 42.85 % 2. 22.43 % 3. 40.32 % 4. 33.61 % Answer: A 4. Which pair of molecules has the strongest dipole–dipole interaction? A. NH3 and NH3 B. CH4 and CH4 C. CO2 and CO2 D. NH3 and CH4 Answer: A 5. Balance the following redox reaction: P2H4⟶ PH3+P4H2 A. 3P2H4⟶ 6PH3+P4H2 B. 5P2H4⟶ 6PH3+P4H2 C. 3P2H4⟶ 4PH3+P4H2 D. 5P2H4⟶ 4PH3+P4H2 Answer: B 6. Calculate pH and pOH in 0.015 m HCL solution. Solution 7. How much energy (approx) is required to melt 450g of ice at 0oC? A. 1500 KJ B. 1600 KJ C. 150 kJ D. None of these Answer: C 8. How much energy is required to convert 100.0g of water at 20.00 completely to steam at 100.00? 9. What is the molarity of a NaOH solution containing 10g of in 500mL of solution? a. 0.75 mol L–1 b. 1.25 mol L–1 c. 0.25 mol L–1 d. 0.5 mol L–1 10. What is the normality of 0.2M H3PO3 solution? A. 0.1N B. 0.4N C. 0.6N D. 0.2N Bigsot, Kylle Jae A. Section T01-GC1 CHEMISTRY 1. Organic chemistry is the chemistry of specific ___________ compounds. A. chlorine B. oxygen C. nitrogen D. carbon Answer: D 2. Which of the following atoms would qualify as a heteroatom in organic chemistry?  A. Carbon B. Chlorine C. None of the above D. Hydrogen Answer: D 3. BCl3 does not exist as a dimer but BH3 exists as a dimer because: A. Chlorine is more electronegative than hydrogen B. Large sized chlorine atoms do not fit in between the boron atoms whereas small sized hydrogen atoms fit in between the boron atoms C. None of the above D. There is a pπ−pπ back bonding in BCl3 but BH3 does not contain such bonds Answer: B 4. The amount of water produced by the combustion of 16g of methane is: A. 36g B. 16g C. 18g D. 32g Answer: A 5. For the chemical equation given below, what is the amount of methane required to produce 72 g of water? A. 32 g B. 44 g C. 64 g D. 16 g Answer: A 6. Which characteristics of carbon are responsible for the existence of a large number of organic compounds? A. Catenation property B. Multiple bond formation C. Isomerism D. All of these Answer: D 7. How many grams of methane need to react with 32 g of oxygen to make 22 g of CO2 and 18 g of water? A. 22 g B. 18 g C. 32 g D. 8g Answer: D 8. How many gram molecules of methane are required to produce 22gCO2(g) after combustion? A. 8 B. 0.25 C. 4 D. 0.5 Answer: A 9. How many grams of oxygen (O2) are required to completely react with 0.20g of hydrogen (H2) to yield water (H2O)? (molar mass H2 =2g/mol, O2 = 32g/mol) A. 1.6 B. 2 C. 0.8 D. 3.2 Answer: A 10. How many grams of H2O will be formed when 16.0 g H2 is mixed with 16.0 g O2 and allowed to react to form water? A. 9.0 g B. 18.0 g C. 36.0 g D. 32.0 g E. 72.0 g F. Answer: B PHYSICS 1. Kinematics deals with the - A. cause of motion B. Neither of the above C. Both of the above D. description of motion Answer: D 2. Juhi travelled a distance of 16 km by bicycle at the speed of 15 km per hour, 20 km by scooter at the speed of 50 km per hour and 50 km by car at the speed of 60 km per hour. The total time (in minutes) to travel these distances was A. 138 B. 144 C. 114 D. 88 Answer: A 3. A man travelled a distance of 60 km in 7 hours partly on foot at the rate of 8 km per hour and partly on a bicycle at 16 km per hour. Distance travelled by foot is: A. 52 km B. 48 km C. 36 km  D. 44 km E. None of these Answer: D 4. A student unable to answer a question on Newton's laws of motion attempts to pull himself up by tugging on his hair. He will not succeed A. as the force exerted is small B. the frictional force while gripping, is small C. Newton’s law of inertia is not applicable to living beings D. as the internal force applied is to the system Answer: D 5. What is kinetic energy of block of mass m at bottom in above problem. Answer: B 6. A man is 45m behind the bus when the bus starts acceleration from rest with acceleration 2.5ms−2. With what minimum velocity should the man start running to reach the bus? Answer: A 7. A man is 45 m behind the bus when the bus start accelerating from rest with acceleration 2.5. With what minimum velocity should the man start running to catch the bus A. 12 B. 14 C. 15 D. 16 Answer: C 8. Deceleration is _________ acceleration. A. Zero B. Negative C. Positive Answer: B 9. An insect crawling straight down the length of a meter stick is at the 12cm mark at one instant, and 22 minutes later is at the 60cm mark. Which one of the following is the magnitude of the insect’s average velocity? A. 0.4cm/s B. 0.5cm/s C. 24cm/s D. 30cm/s Answer: A. 10. A bucket is being lowered down into a well through a rope passing over a fixed pulley of radius 10cm. Assume that the rope does not slip on the pulley. Find the angular velocity of the pulley at an instant when the bucket is going down at a speed of 20cm/s and has an acceleration of 4.0m/s2 A. 2 rad/s B. 20 rad/s C. 0.2 rad/s D. 0.02 rad/s Answer: A LEYSON,YVONNE S. T01-GC1 CHEMISTRY 1. An ideal gas obeying kinetic gas equation: a. can be liquefied if its temperature is more than critical temperature b. cannot be liquefied under any value of T and P c. can be liquefied if its pressure is more than critical pressure d. can be liquefied at any value of any value T and P ANS. B, 2. Give a solution of 1M acid, HA, with Ka=1×10−6. What is the H3O+ concentration? (Assume [HA]=1,[H3O+]=x,[A−]=x). A. 1×10−5 M B. 1×10−2 M C. 1×10−3 M D. 0.9×10−3 M E. 1×10−4 M ANS : C.1 × 10-3 M 3. 0.01 M Solution of H2A has pH=4. If Ka1 for the acid is 4.45×10−7, the concentration oF HA− ion in the solution would be: A. 1.0×10−2 M B. 4.45×10−5 M  C. 8.0×10−5 M D. Unpredictable ANS : B 4.45×10−5 M 4. 36 grams of carbon and 32 grams of oxygen gas react to form carbon dioxide. What is the limiting reagent? a. Oxygen gas is limiting. b. There is no limiting reagent. c. The oxygen and hydrogen are both limiting. d. Carbon in limiting. ANS. A.Oxygen gas is limiting.’ 5. 2.0 moles of hydrogen gas and 2.0 moles of oxygen gas react to form water. What is the limiting reagent? a. Hydrogen gas is limiting. b. There is no limiting reagent. c. The oxygen and hydrogen are both limiting. d. Oxygen gas is limiting. ANS : H2 is the limiting reagent. (A.) 3.0 moles of oxygen gas react with 3.0 moles of hydrogen gas to produce water vapor. What are the total moles of gas present at the end of the reaction?  a. 2.5 moles of gas are present b. 1.5 moles of gas are present c. 3.0 moles of gas are present d. 4.5 moles of gas are present Ans : D. 4.5 moles. 7. How many moles of O2 gas are present in a sample which occupies a volume of 1.50 litres at 5.00 atmospheres pressure and 70oC temperature? a. 0.266 b. 0.536 c. 0.036 d. 0.103 Ans & solution: a.0.266 8. How many moles of He gas occupy 22.4 liters at 30oC and one atmospheric pressure? a. 0.90 b. 1.11 c. 1.0 d. 0.11  𝑅𝑅 (1 𝑅𝑅𝑅)(22.4𝑅) ANS : PV=nRT , 𝑅 = 𝑅𝑅 = (0.082 𝑅 𝑅𝑅𝑅/ 𝑅𝑅𝑅𝑅 𝑅) (30+273) = 𝑅. 0.90 𝑅𝑅𝑅𝑅 9. Identify the pair of positional isomers: a. Butan-1-ol, Butan-2-ol b. Butan-1-ol, Butane c. Formaldehyde, Formic acid d. None of these ANS : a. Butan-1-ol, Butan-2-ol 10. Arrange the following compounds in increasing order of boiling point. I. Propan-1-ol II. Butan-1-ol III. Butan-2-ol IV. Pentan-1-ol a. III Temperature of fluid B D. Density of fluid A < Density of fluid B Answer: D. Density of fluid A < Density of fluid B 8. The weight of an object is due to A. Gravitational force B. Frictional force C. Both gravitational and frictional force D. Neither gravitational nor frictional force Answer: A. Gravitational force 9. Velocity is defined as _____ per time A. Distance B. Displacement C. Power D. Acceleration Answer: B. Displacement 10. If the displacement is perpendicular to the force, then the work done is said to be ________ A. -1 B. 1 C. 0 D. Infinity  Answer: C. 0 ___________________________________________________________________________ Maximo, Ana Patricia A. T01-GC1 BIOLOGY 1. What is the initial, slow phase of geometric growth called? a. Elongation phase b. Lag phase c. Log phase d. Exponential phase Solution: The answer is ‘b’. In geometric growth, the initial phase of slow growth is called ‘lag phase’. 2. What are the plants that flower during seasons with long days called? a. Long night plants b. Short day plants c. Long day plants d. Short night plants Solution: Answer is C and D. Long days also means shorter nights. Therefore, these plants are called Long Day Plants or Short Night Plants. 3. Who first saw and described a live cell? a. Matthias Schendel b. Theodore Schwann c. Anton von Leeuwenhoek d. Rudolf Virchow  Solution: The correct answer is C. The cell was first discovered by Robert Hooke. However, he saw the dead cell walls of a plant cell. Anton von Leeuwenhoek was the first to observe, describe, and sketch a free live cell. 4. The intracellular compartments are not found in which of the following cells? a. Lower plants b. Prokaryotes c. Higher plants d. Eukaryotes Solution: the correct answer is B. Prokaryotic cells are the primitive unicellular organisms which have disorganized nucleus without a nuclear membrane. 5. Eukaryotic cells have membrane bound organelles a. True b. False Solution: Correct answer is True. Organelles are the specialized and organized structures in a living cell. These may be bound by a single or double membrane (Exception is ribosomes which are non-membranous cell organelles present in both prokaryotes and eukaryotes). Membrane-bound cell organelles include nucleus, vacuole, endoplasmic reticulum, chloroplasts, mitochondria, lysosomes, Golgi apparatus and are present only in eukaryotes. 6. Unlike eukaryotic cells, prokaryotic cells a. Lack in plasma membrane b. Do not have a nucleus c. Have RNA not DNA d. All of above Solution: correct answer is B. Eukaryotic cells have membrane-bound organelles and have a true nucleus whereas prokaryotic cells do not have a true nucleus. The prokaryotic cells have a nucleoid region where the chromosome lies. 7. Which of the following is not a stage of the interphase? a. G1 phase b. G2 phase  c. G3 phase d. Synthesis phase Solution: The correct answer is C. This is because there is no such stage as the G3 phase. Furthermore, the other three options are certainly the stages of phases of the interphase. 8. Which of the following is not included in the cytoplasm? a. Endoplasmic reticulum b. Mitochondria c. Cell membrane d. Vacuole Solution: Correct answer is C. The cell membrane is outside the cytoplasm, the other constituents are inside it. 9. When does Reductional Division occur? a. Telophase 2 b. Anaphase c. Metaphase 1 d. Prophase 2 Solution: correct answer is option C (Metaphase 1). The two homologous pairs of genes align on the metaphase plate. During Metaphase I of Meiosis, along the central portion of the cell in preparation for ‘reductional division’. 10. Which of these is not true for chloroplast structure? a. They are oval in shape b. Granum (plural: grana) is a stack of thylakoids c. They have two membranes d. Stroma is space within the outer membrane Solution: correct answer is D. https://www.toppr.com/guides/biology/cell-the-unit- of-life/chloroplast-definition-structure-functions/ CHEMISTRY 1. The characteristic properties of an acid is due to the presence of ___________ a. Hydride ions b. Hydroxyl ions c. Hydronium ions d. Oxide ions Solution: The correct answer is option ‘c’. The acid in aqueous solution gives H+ ion which combines with water to form hydronium ions (H3O+). Hence, acid is characterized by the presence of hydronium ions. 2. Alkalis are which of the following: a. Weak acids b. Strong acids c. Weak base d. Strong base Solution: correct answer is option ‘d’. Alkalis are water-soluble bases. They completely dissociate into hydroxide ions in aqueous medium. Hence they are strong bases. 3. What happens when a blue litmus paper is dipped into an acid solution? a. It turns red b. Litmus paper turns green c. Color vanishes out d. No change is present in the color Solution: the paper turns red in color (option A). 4. Which of the following statements is not true when it comes to buffer solutions? a. Buffer solutions are organic in nature b. Buffer solutions are aqueous solutions c. These solutions consist of a mixture of a weak acid and its conjugate base d. The use of conjugates gives buffer solutions their resistance to pH changes  Solution: correct answer is option A. which is “buffer solutions are organic in nature”. This is not true because buffer solutions consist of a mixture of a weak acid and its conjugate base or vice-versa. 5. What is the pH value of seawater? Is it acidic, basic or neutral in nature? a. less than two, it is highly acidic b. more t