Chemistry Question Bank PDF - Odisha

Council of Higher Secondary Education ,Odisha Question Bank Sub: Chemistry Topic: Solutions (Unit- I) One mark questions 1. What is the freezing point of water at 1 atm pressure in Kelvin scale? 2. Vapour pressure of a li...

Council of Higher Secondary Education ,Odisha Question Bank Sub: Chemistry Topic: Solutions (Unit- I) One mark questions 1. What is the freezing point of water at 1 atm pressure in Kelvin scale? 2. Vapour pressure of a liquid __________ with rise of temperature. 3. Viscosity of a liquid _________ with rise of temperature. 4. Between water and ether ___________ has higher vapour pressure. 5. Solubility of a saturated solution __________ with increase in temperature. 6. When 1gm equi. Of a solute dissolved in 1 lit. of solution. It is called _________. 7. What is the SI unit of viscosity? 8. What is the SI unit of surface tension? 9. When 1 gm mole of a solute dissolved in 1 lit. of solution. It is called ______. 10. Cleaning action of soap is due to (a) viscosity of water (b) surface tension of water (c) polarity of water (d) high boiling point of water 11. The unit of viscosity in CGS system (a) Dyne cm-1 (b) Dyne (c) Dyne cm-2sec-1 (d) Dyne cm 12. The effect of pressure on solubility of gas is described by which law? (a) Boyle’s law (b) Charle’s law (c) Henry’s law (d) Ostwald’s dilution law 13. Mole fraction of solute × solute = No. of moles of solute (a) No. of moles of solute  No. of moles of solvent No. of moles of solvent (b) No. of moles of solute  No. of moles of solvent No. of moles of solute (c) No. of moles of solute  No. of moles of solution (d) None of these 14. Parts per Million (ppm) = 1  Mass of solute  10 6 (a) Mass of solution Mass of solute  10 5 (b) Mass of solution Mass of solvent  10 6 (c) Mass of solution Mass of solute  10 5 (d) Mass of solvent 15. Molality = Moles of solute (a) Mass of solvent in kg Mass of solute (b) Mass of solvent in kg Mass of solvent (c) Mass of solute in kg Mass of solute (d) Mass of solution 16. Ideal solutions obey which law? (a) Henry’s law (b) Roult’s law (c) Boyle’s law (d) Charle’s law H mix  17. For an ideal solution (a) Zero (b) One (c) Two (d) Not known 18. The properties of dilute solutions which depend on the number of solute particles are called __________. 19. Which of the following are colligative properties? (i) Elevation in boiling point (ii) Depression in freezing point (iii) Viscosity (a) (i) (c) All of the above (b) Both (i) & (ii) (d) Both (ii) & (iii) 20. Vant-Hoff’s factor = 2  observed value of colligative property (a) calculated value of colligative property calculated value of colligative property (b) observed value of colligative property No. of moles of solute (c) No. of moles of solvent (d) None of the above 21. The boiling point of water in a pressure cooker is (a) Below 1000C (b) Above 1000C (c) 1000C (d) None of the above ANSWERS 1. 273 K 2. Increases 3. Decreases 4. ether 5. Increases 6. Normality 7. Pascal × sec or Kg m-1 sec 8. Newton/mt 9. Molarity 10. (b) 11. (c) 12. (c) 13. (a) 14. (a) 15. (a) 16. (b) 17. (a) 18. colligative properties 19. (b) 20. (a) 21. (a) 2 Mark questions/ 3 Marks questions 1. What is a saturated solution? What is the effect of temperature on solubility of saturated solution? 2. Explain why NaCl is not soluble in CCl4. 3. What is the effect of temperature and pressure on solubility? 4. Define Normality of a solution. Give the formula. 3 5. If 20 gm of NaOH is dissolved in 500 mL of solution. What is the normality. 6. Define Molarity of a solution. Give the formula. 7. How many grams of Na2CO3 is required to make 500 mL of 0.01 M solution? 8. Define Molality of a solution. What is the effect of temperature on Molality? 9. Calculate the Mass to Mass percentage if 10 gm of solute in 50 gm of solution. 10. Calculate the Molality of 2.5 gm of ethanoic acid in 75 gm of benzene. 11. What is the Molality and Normality of 49 gm H2SO4 dissolved in 1 lit of solution. 12. What are the factors on which the solubility of a gas in liquid depends? 13. Define vapour pressure of a liquid. What is the SI unit? 14. Define boiling point of a liquid. Plot the variation of vapour pressure of liquid with temp. for water. 15. What are the characteristics of ideal solutions? 16. Define a non-ideal solution. 17. State and Explain Roult’s Law. 18. Define colligative properties of a solution. Give examples. 19. What is elevation of boiling point Tb  ? How to find out molecular mass of solute using Tb ? 20. What is depression of freezing point? How to find out molecular mass of solute using T f ? 21. Define osmosis. How it differs from diffusion? 22. What do you mean by osmotic pressure? Define an Isotonic solution. 23. Derive Vant-Hoff’s equation for dilute solution. 24. What is Vant-Hoff’s factor? Discuss its applications. 25. A 5% solution of CaCl2 at 00C developed an osmotic pressure of 15 atmosphere. Calculate the degree of dissociation. 7 Mark questions 1. Write notes on (a) Viscosity (b) Osmosis 2. Explain the effect on the boiling point and freezing point when non-volatile solute is dissolved in a solvent. 3. State Roult’s law. Derive its mathematical expression for a solution of a non-volatile solute in a volatile solvent. 4. Discuss Minimum boiling azeotropes and maximum boiling azeotropes. 5. What is Abnormal Molecular Mass? Discuss its being in Molecular Association/Dissociation. 6. What is Vant-Hoff factor? How it helps in the determination of degree of dissociation. 7. (a) Define the terms osmosis and osmotic pressure. (b) Calculate the boiling point of a solution prepared by adding 15 gm of NaCl to 250 gm of water. (Kb for H2O = 0.512 Kg mol-1, Molar mass of NaCl = 58.5 gm). 8. (a) Why elevation in boiling point is a colligative property? (b) Calculate the osmotic pressure in pascal exerted by a solution prepared by dissolving 1 gm of polymer of molar mass 1,85,000 in 450 mL of water at 37 0C. 4  ************* Unit – II Electrochemistry One Mark questions: 1. Write down the unit of cell constant. 2. The quantity of charge required for the reduction of Al3+ to Al is __________. 3. The product of electrolysis at cathode using Ag electrode in an aq. solution of AgNO 3 is _________. 4. The SI unit of molar conductivity is ___________. 5. Electrical conductance of metal ___________ with increase in temperature. 6. A galvanic cell directly converts _______ energy to electrical energy. 7. What is standard electrode potential? 8. Protection of Fe by coating with Zn is called __________. 9. Write down the expression for conductivity (k). 10. How molar conductivity of a weak electrolyte varies with concentration. 11. Write down the relation between G & Ecell. 12. Define a primary cell. 13. Which electrolyte is used in fuel cell? 14. Which one of the following is not a good conductor of electricity? (a) CH3COONa (b) C2H5OH (c) NaCl (d) KOH 15. The number of e- s required to balance the following equation NO3  4 H   e  2 H 2 O  NO is (a) 5 (b) 4 (c) 3 (d) 2 16. What amount of electric charge is required for the reduction of 1 mole of Cr2 O72  into Cr3+ (a) 6 F (b) 3 F (c) 1 F (d) 4 F 17. One Faraday of electricity is passed through a solution of CuSO 4. The mass of Cu deposited at cathode is _________ (At mass of Cu = 63.5 amu) (a) 2 g 5  (b) 12.7 gm (c) 63.5 gm (d) 31.75 gm 18. An increase in equivalent conductance of a strong electrolyte with dilution is mainly due to (a) Increase in number of ions (b) Increase in ionic mobility of ions (c) 100 % ionization of electrolyte at normal dilution (d) Increase in both i.e. number of ions & ionic mobility of ions. 19. 0m  NH 4 OH  is equal to (a) 0m  NH 4 OH  + 0m  NH 4 Cl  - 0m HCl  (b) 0m  NH 4 Cl  + 0m  NH 4 OH  - 0m  NaCl  (c) m 0  NH Cl  0  NaCl  0  NaOH  4 + m - m (d) none of these 20. In a galvanic cell, the salt bridge (a) Participate chemically with cell reaction (b) stops diffusion of ions from one e- to another (c) is not necessary for the occurrence of cell reaction (d) increases the mixing of two electrolytic solutions ANSWERS 1. cm-1 2. 3 × 96500 C 3. Ag 4. Sm2mol-1 5. Decreases 6. Chemical 7. potential at 298 K, 1 atm pressure and 1M solution 8. Galvanization 1 k  cell const. 9. R 10. Increases with decreases in cm. G   nFEcell 11. 12. Redox reaction occurs only once 13. Concentrated aq. KOH 14. (b) 15. (c) 16. (b) 17. (d) 18. (b) 19. (b) 20. (b) 6 2 Mark questions/ 3 Mark questions 1. What is the use of salt bridge in galvanic cell? 2. What is the free energy change for (a) galvanic cell (b) electrolytic cell? 3. Can we store ZnSO4 solution in a Cu container. Give reasons. 4. What is an electrochemical series? Write any two applications. 5. Give the relationship between equivalent conductance and molar conductance of a given solution. 6. Write down the expression for degree of dissociation (α) relating to molar conductivity. 7. Define electrode potential. 8. Why does Zn react with dil. H2SO4 but Cu does not? Mg ( s ) Mg 2  ( aq ) Ag  ( aq ) Ag ( s ) 9. Write Nernst equation to calculate the cell potential of. 10. State and explain Kohlrausch’s law. 11. 2 AgCl ( s )  H 2 ( g )(1atm) 2 Ag ( s )  2 H  (0.1M )  2Cl  (0.1M ) for the above reaction G 0 = - 43600J at 250C find out G 0. 12. Calculate the emf of the cell in which the following reaction takes place. Ni ( s )  2 Ag  (0.002 M ) Ni 2 (0.16 M )  2 Ag ( s ) Given that E cell  1.05V. 0  13. If a current of 0.5 amp flows through a metallic wire for 2 hours, then how many e s flow through the wire. 14. At 250C the standard EMF of the cell Zn( s ) Zn 2  (1M ) Cu 2  (0.1M )  Cu ( s ) is 1.3 volt. Calculate the emf of the cell. 15. Conductivity of 0.00214 M acetic acid is 7.8 × 10 -5 S cm-1. (i) Calculate its molar conductivity. Given that  = 390.5 S cm2 mol-1. 0 (ii) Calculate degree of dissociation. 16. Predict the feasibility of the reaction. 0 E Ag   0.8V , ECu 0 2  0.34V. (i) Ag+(aq) with Cu (s) , Ag ,Cu E 0 3 2  0.77V. (ii) Fe3+(aq) with Ag (s) Fe , Fe 17. State and explain Faraday’s laws of electrolysis. 18. Differentiate between fuel cell and batteries. 19. What are the different types of fuel cells. 20. What is corrosion? Explain the different types of it. ************* 7  Unit – III Chemical Kinetics Group - A MCQ: 1. What is the unit of zero order reaction? (a) moles/lit-1/sec-1 (b) sec-1 (c) mole-1.lit.sec-1 (d) mole-2.lit2.sec 2. Unit of first order rate constant is: (a) sec-1 (b) moles. lit-2.sec-2 (c) mole-1.lit.sec-1 (d) mole-2.lit2.sec-1 3. Which of the following is the unit of second order rate constant? (a) sec-1 (b) moles. lit-2.sec-2 (c) mole-1.lit.sec-1 (d) mole-2.lit2.sec-1 4. Which of these is the relation between half-life and rate constant for first order reaction? 0.693 (a) K 2.303 (b) K (c) 0.693 K a (d) 2 K 5. The specific rate constant of a first order reaction depends on the (a) concentration of the reactant (b) concentration of the product (c) time (d) temperature 6. What will be a constant of 53 1128 left after 50 minutes (t == 25 minutes) 1/2 (a) ½ (b) ¼ (c) 1/3 (d) 1/8 8 7. 75 % reaction is completed 3n 32 minutes. 50 % of the reaction will be completed is (a) 24 minutes (b) 16 minutes (c) 8 minutes (d) 32 minutes 8. The hydrolysis ethyl acetate in acid medium is a reaction of the: (a) Zero order (b) First order (c) Second order (d) Third order 9. The hydrolysis of ester in acidic medium is: (a) Third order reaction (b) Zero order reaction (c) First order reaction (d) Second order reaction 10. The rate expression of a chemical change is dx  K [ A]2 [ B][C ]0 dt. The order of the reaction is: (a) 2 (b) 3 (c) 1 (d) 0 11. The half-life period if a reaction is 100 seconds in 400 seconds the initial concentration of 2.0 g will be come: (a) 0.25 g (b) 0.35 g (c) 0.125 g (d) 30.3 g b 12. When a graph is plotted between is K cased T for a first order reaction. We get a straight line. The slope of the these is equal to: Ea  (a) 2.303 2.303  (b) Ea.K Ea (c) 2.303K E  a (d) K 13. Which one of the following did not influence is the rate of reaction: (a) Nature of reactant (b)Temperature (c) Molecularity 9  (d) Concentration of the reactant. 14. In which of the following cases does the reaction go through to completion: (a) K = 102 (b) K = 10-2 (c) K = 10 (d) K = 1 15. For an endothermic reaction where H is the enthalpy of reaction in kg/mole. The minimum value of activated energy will be: (a) Less than H (b) Zero (c) Equal to H (d) More than H 16. What is the unit of second order rate constant? 17. Name any two factors that influence rate of reaction. 18. Give one example of zero order reaction. 19. Calculate the order of the reaction having rad expression. Rate = K[B] 1/2 [B]3/2 20. Write the expression for Arrhenius equation for reaction rate. 21. The rate constant of a first order reaction is 8.93×10-4 sec-1. The Half-life period is _______. 22. The hydrolysis ester in acid medium is ___________ order reaction. 23. Saponification ester is a __________ order reaction. 24. The rate of the reaction having unit of rate constant mol-1.lit.sec-1 is ___________. 25. The Threshold energy (Eth) and Activation energy E0 are related as _________. ANSWERS 1. (a) 2. (a) 3. (c) 4. (a) 5. (d) 6. (b) 7. (b) 8. (b) 9. (d) 10. (b) 11. (c) 12. (c) 13. (c) 14. (a) 15. (c) 16. Lmol-1s-1 17. Temperature, Concentration of reactant 18. H2(g) + Cl2(g) → 2HCl(g) 19. Second order 20. K = A. E-Ea/RT 21. 103 sec 10 22. First order 23. Second order 24. Second order 25. Ea = Ets - Er 2/3 Marks Group – B 1. Define rate of reaction write its unit. 2. Define order and molecularity with examples. 3. Define activation energy. Explain with diagram. 4. What are the factors that influence rate of reaction? 5. Derive the relation between rate constant and half-life of a first order reaction. 6. The half-life period of a first order reaction is 100 sec. What is the rate constant? 7. A first order is completed 50% in 30 minutes. How much time it will take to complete 75% of the reaction? 8. Write notes in half-life period. 9. A reaction is completed 20% in 20 minutes. How much time it will take to complete 80% of the reaction? 10. Calculate the rate constant of first order reaction. Which is 90% complete in 10 minutes? 11. The rate of chemical reaction doubles for an increase of 10 K in absolute temperature from 298K. Calculate Ea. 12. What are the differences between order and molecularity with example? 13. Define effective collision. 14. What is zero order reaction give one example? 15. Derive an expression for the half-life period of a zero-order reaction. 16. What is Threshold and Activation energy? Explain with examples. 17. What is the effect of temperature on rate of reaction? 18. The decomposition of Hydrocarbon follows the equation. K = (4.5 × 10 11s-1) e-28000K/T. What is the value of Ea? 19. According to collision theory. What is the expression for rate of reaction? 20. What is the effect of catalyst on rate of reaction explain with diagram? Long Questions 1. Derive an expression for the rate constant of a first order reaction. What is the relation between half-life and rate constant? 2. Derive an expression for zero order rates constant. Derive an expression for half-life of a zero-order reaction. 3. (a) Difference between order and molecularity with example. (b) Derive Arrhenius equation of reaction rate. **************************** 11  Unit – IV d and f – block elements Group – A Short Question (1 Mark): 1. Which one of the following is a Transition element? (a) Ca (b) Al (c) Co (d) Na 2. Which one of the following is a d-block element? (a) Ca (b) U (c) Mn (d) Al 3. Which of the following statements about transmission element is wrong? (a) They form colored compounds (b) All their compounds are diamagnetic (c) They exhibit variable valency (d) They contain partially filled d-orbital. 4. LunarCaustic is (a) AgNO3 (b) MgNO3 (c) (CH3COO)2Pb (d) CuSO4 5. The Matte obtained in the extraction of copper contains: (a) FeSiO3 (b) FeS + SiO2 (c) FeS + Cu2S (d) CuS + SiO2 + FeO 6. Purest form of Iron is: (a) Cast Iron (b) Pig Iron (c) Wrought Iron (d) Steel 7. Mohr’s salt is a (a) Normal Salt (b) Acid Salt (c) Basic Salt (d) Double Salt 8. Rust is: (a) Fe2O3. 2H2O (b) FeO.2H2O 12  (c) Fe3O4.H2O (d) Fe2O3 9. Copper is extracted from Sulphide ore using the method: (a) Carbon reduction (b) Base reduction (c) Carbon monoxide reduction (d) none of the above 10. Which is used for stopping bleeding? (a) FeCl3 (b) Mohr’s Salt (c) Green vitriol (d) Sodium Nitro-pruside 11. ZnO is: (a) Acidic (b) Basic (c) Amphoteric (d) None 12. Which one of the following is a f-block element? (a) Cu (b) U (c) Fe (d) Al 13. What is the Oxidation number of Mn in KMnO 4? (a) +6 (b) +7 (c) +3 (d) +1 14. Name the member of Lanthanoidseries which is will know to exhibit +4 oxidation state: (a) Ce (b) La (c) Eu (d) Lu 15. The most common oxidation state in Lanthanoid: (a) +3 (b) +2 (c) +4 (d) +1 16. Which one of the following is colored? (a) Zn2+ (b) Hg2+ (c) Sc3+ (d) Fe2+ 17. Which one of the following is diamagnetic? (a) Zn2+ (b) Sc2+ (c) Fe2+ (d) Mn2+ 18. What is the general electronic configuration of transition elements? 19. Between Fe2+ and Fe3+ in paramagnetic. 20. Name one ore of Iron. 13 21. Give electronic configuration of Cu. 22. Give the formula of amine complex of copper. 23. What is the formula its copper pyrite? 24. Define Transition element. 25. What is the oxidation number of Mn in MnO4? 26. What are refers present in will metal? 27. Why FeCl3 is a Lewis acid? 28. Why Transition metals are paramagnetic? 29. Why transition elements are used as catalyst? 30. What is percentage of carbon in steel? ANSWERS 1. (c) 2. (c) 3. (b) 4. (b) 5. (c) 6. (c) 7. (d) 8. (a) 9. (d) 10. (a) 11. (c) 12. (b) 13. (b) 14. (a) 15. (a) 16. (d) 17. (a) 18. (n – 1)d1-10nS1-2 19. Fe3+ 20. Hematite 21. [Ar]183d104s1 22. {(Cu/NH3)4}SO4 23. CuFeS2 25. +7 26. Cu and Sn 30. 2% Two/Three marks: 1. Mention any two characterization of Transition element. 2. How do your account for the variable oxide on state of transition elements? 3. What happens when KI solution is added to CuSO 4 solution? 4. Why Iron become passive with conc. HNO3 acid solution? 5. Why chromium has higher boiling point then zinc? 6. Why transition metal compounds are colored? 14 7. Silver atom has completely filled outermost orbit in its ground state. Why it is a transition element? 8. How would you account for the increasing oxidizing power in the series? VO2  Cr2 O72   MnO4 9. How would you account for the irregular variation of ionization enthalpy is in the first- row transition series? 10. Which is a stronger reducing agent Cr2+ or Fe1+. 11. Why is the highest oxidation state of a metal exhibited in its Oxides or Fluorides? Why? 12. Calculate the magnetic moment of Mn 2+. 13. Between Fe2+ and Fe3+. Which is more magnetic and why? 14. What is meant by disproportionation of an oxidation state? Give an example. 15. Lanthanides have variable oxidation state. Why? 16. What is Lanthanide contraction? 17. What are the Oxidation states exhibited by Lanthanoids? 18. The enthalpies of atomization of the transition metals are high. 19. Transition metal their compossible are very good catalyst. Why? 20. The ‘d’ configuration in very unstable. Explain. Long Questions 1. Define Transition element. Discuss three Characteristics of transition element. 2. What is Lanthanoid contraction? Write down the consequence of Lanthanide contraction. 3. Write the electronic configuration of Lanthanoids. Why the Lanthanoids has might stable oxidation +3? 4. Give reasons of the following: (i) The lowest oxide of transition metal is basic whereas the highest oxide is. amphoteric or acidic. (ii) The highest oxidation is exhibited in oxo-anions of a metal. (iii) The generally the transition metal compound are colored. 5. (a) Why the transition metal form compose compound? (b) What is Effective atomic number rule? (c) What are interstitial compounds? **************** 15  Unit – VI Haloalkanes and Haloarenes Group - A Multiple Choice questions ( 1 Mark Each) 1. Write the IUPAC Name of the following compound (a) 4 – Bromo – 3 – chloro – 2 – methylbutane (b) 1 – Bromo – 2 – chloro – 3 – methylbutane (c) 1 – Bromo – 2 – chloro – 2,2 – dimethylpropane (d) 2 – methyl – 2 – chloro – 3 – bromopropane 2. Which one is optically active compound? (a) CH3 – CH(Cl)C2H5 (b) CH3 – CH(Br) – CH3 (d) CH3 – CH2 – CH2 – Br 3. Which of the following will not give iodoform reaction? (a) Propanone (b) Acetaldehyde (c) Ethyl alcohol (d) Methanol 4. When Propyl alcohol reacts with phosphorous tri-halide the product obtain is: (a) Isopropyl halide (b) 1 – halo propane (c) 3 – halopropane (d) Propanal 5. Alkyl halide reacts with alcoholic KOH to give (a) Alcohol (b) Alkyne (c) Alkane (d) Alkene 6. What is the correct of reactivity of halogen acid towards alcohol? (a) HI > HBr > HCl (b) HCl > HBr > HI (c) HCl > HI > HBr (d) HI > HCl > HBr 7. Correct order of reactivity towards nucleophilic substitution reaction of the compounds 16  (a) (i)(ii)(iii)(iv) (b) (ii)(iii)(i)(iv) (c) (i)(iii)(iv)(ii) (d) (ii)(iii)(iv)(i) 8. Which compound has highest melting point? (a) P – Dibromobenzene (b) M – Dibromobenzene (c) O – Dibromobrnzene (d) Bromobenzene 9. Sulphonalin of Chlorobenzene produces major product: (a) 2 – Chlorobenzene sulphonic acid (b) 4 – Chlorobenzene sulphonic acid (c) 2,4 – Chlorobenzene disulphonic acid (d) 3 – Chlorobenzene sulphonic acid 10. Which statement is incorrect for the following assumption between chlorobenzene and methyl chloride regarding bond length between “C – Cl”: (a) sp2 hybridised ‘C’ atom sp3 hybridised ‘C’ atom (b) resonance in a bone structure Inductive effect (c) % of ‘S’ character % of ‘S’ – character (d) + I effect - I effect  11. C 2 H 5  Br  C 2 H 5 O K  C 2 H 5  O  C 2 H 5  KBr. The name of the above reaction is: (a) Relmer Tiemann reaction (b) Aldol condensation (c) Williamson synthesis (d) Kolbe’s reaction 12. Aniline when treated with NaNO2(HBr) at 273 K will produce: 17  (d) None of these 13. Toluene when treated with chlorine gas in presence of sunlight will give: 14. Ethyl iodine reacts with sodiumpropoxide will generally yield (a) Ethylpropyl ether (b) Diethyl ether (c) Pentane (d) Propoxy ethane 15. DDT is used for (a) powerful insecticide (b) powerful fungicide (c) preparation of detergent (d) none of these 16. What happens when 2 – propanal is treated with thionylchloride? Give equation: Complete the reaction R  CN     R  CH 2  NH 2    ? Na / C 2 H 5 OH NaNO 2 / HCl 17. 18. Why boiling point of alkyl halide is higher than the corresponding hydrocarbon? 19. Write the name of the monomer of Teflon. 18 20. How many δ and π – bonds are present in Isopropyl chloride? 21. What is Wurtz –Fittig reaction? 22. Complete the reaction CH3 – CH2 – I + AgCN → 23. Chlorobenzene is less reactive towards nucleophilic substitution reaction, why? 24. What is freons? 25. What happen when bromobenzene reacts with nitric acid in the presence of sulphuric acid. 26. Write the use of trichloromethane. 27. What is Sandmeyer reactions? 31. In Williamson’s reaction, an alkyl halide is treated with which reagent. Give equation for this. 32. Complete the reaction 33. Complete the reaction (a) CH3CH2OH + PCl5 →_______ + ________+ HCl (b) CH3CH2Br + KOH (alc) →_______ + _______ + ________ (c) CH3CH2 – COOAg + Br2 → _______ + _______ + ________ 34. Which one has higher boiling point and why? C2H5 – Cl, C2H5 – Br, C2H5 – I 35. In the pair (CH3)3C – Cl and CH3Cl, which one undergo SN2reaction and why? 36. Explain SN1 mechanism in tert.Butylbromide with aq. KOH solution. ANSWERS 1. (b) 2. (a) 3. (d) 4. (b) 5. (d) 6. (a) 7. (c) 8. (a) 9. (b) 10. (d) 11. (c) 12. (a) 13. (d) 19 14. (a) 15. (a) Two/ Three- Mark Questions: 1. Write a note on D.D.T. 2. How can you prepare diethyl ether from ethyl chloride? Give equation. 3. What happens when silver acetate is treated with bromine? Give equation. 4. Identify A, B and C in the following reaction C 2 H 5 OH conc   A . H 2 SO4 Br2 B alc KOH  C 5. Explain, why alkyl halide of lower alkane when treated with metallic sodium give higher alkanes? 6. Explain, why for a given alkyl group, the order of reactivity is RI > RBr > RCl > I? 7. Convert Toluene to benzyl alcohol. 8. How can you convert aniline to chlorobenzene? 9. How will you distinguish between benzyl bromide and p-bromotoluene? 10. Explain, chlorine present in chlorobenzene is ortho and para –directing. 11. How can you convert Benzene to 4 – Bromonitrobenzene? 12. Aryl halides are extremely less reaction towards nucleophilic substitution reaction why? 14. How Benzene Hexachloride is prepared from Benzene? Give equation. Write one important use of BHC. 15. Complete the reaction: 16. If Cl2 gas is passed for a larger time through toluene, then what product is obtained at the last? 17. What is diazotization reaction? Explain with example. Long Questions 1. How can you prepare chlorobenzene from (a) benzene diazonium chloride (b) benzene What happens when chlorobenzene reacts with (a) aq. NaOH at 3000C under pressure (b) Cl2 in presence of Anhydrous FeCl3 2. Describe the general method of preparation of an alkyl halide. How does it react with? (a) NH3 (b) Metallic sodium (c) dilute caustic potash 20 3. Write notes on (a) Iodoform reaction (b) Williamson synthesis 4. Write state notes on (a) Wurtz – Filtig reaction (b) Ullaman reaction 5. Write notes on (a) Freons (b) Chloroform (c) DDT 6. What are the various methods of preparing ethyl iodide? How does it react with? (i) Aqueous KOH (ii) Sodium ethoxide (iii) Ammonia (iv) Alcoholic KOH solution 7. Bring about the following conversion. (i) Methane to Methyl cyanide (ii) Ethane to Ethyl alcohol (iii) Methyl alcohol to Acetic acid 8. Give two examples for the electrophilic substitution in chlorobenzene. Also write the mechanism of reaction. 9. Write the preparation and uses of the following: (i) DDT (ii) CHCl3 (iii) BHC *************** 21  Unit – VII Alcohols, Phenols & Ethers Group - A MCQ: 1. How many alcohols can be possible with molecular formula C 4H10O? Which are chiral in nature? (a) 1 (b) 2 (c) 3 (d) 4 2. Which of the following is most acidic compound? (a) Benzyl alcohol (b) Cyclohexanol (c) Phenol (d) M-chlorophenol 3. What is the correct order of reactivity of alcohols in the following reaction? C 2 H 5 OH  HCl ZnCl 2 C 2 H 5  Cl  H 2 O (a) 30> 10> 20 (b) 10< 20< 30 (c) 30> 20> 10 (d) 10< 30< 20 4. CH3 – CH2 – Cl2 – OH can be converted to CH3 – CH2 – Cl by using (a) LiAlH4 (b) KMnO4 (c) PCC (d) H2/Ni 5. Order of reactivity of alcohols towards sodium metal is (a) Primary > Secondary > Tertiary (b) Primary > Tertiary > Secondary (c) Primary < Secondary > Tertiary (d) Primary < Secondary < Tertiary 6. In the following sequence of reactions CH 3  CH 2  OH P  / I2 A  Mg B HCHO  C H  2O D. The compound D is (a) n-Propyl alcohol (b) Propanol (c) Butanal (d) n-Butyl alcohol 7. In the following reaction, identify ‘X’ (a) CH3COCH3 (b) CH3 – O – CH3 (c) CH3 –CH2 – OH (d) HCHO 8. Oxidation of Phenol with CrO3 gives (a) Cyclohexane (b) P – Benzoquinone 22  (c) Benzoic acid (d) none 9. Hydroboration – Oxidation reaction in propane will yield (a) n – propyl alcohol (b) Isopropyl alcohol (c) Propanal (d) Propanone 10. Which alcohol gives positive iodoform test? (a) Ethyl alcohol (b) tert. Butyl alcohol (c) Phenol (d) Propanol – 1 11. Lucas’ reagent is (a) Conc. HCl (b) SOCl2 (c) Conc. HCl + Zn Cl2 (d) Conc. HCl + anhy. MgCl2 12. Order of acidity of following compounds is: (i) Phenol (ii) O-nitrophenol (iii) M-nitrophenol (iv) P-nitrophenol (a) (iv) > (i) > (ii) > (iii) (b) (iv) > (iii) > (i) > (ii) (c) (iv) > (iii) > (ii) > (i) (d) (iii) > (i) > (ii) > (iv) 13. Which compound has highest boiling point? (a) Ethanol (b) Butan – 2 – ol (c) Propan – 1 – ol (d) Butan – 1 – ol 14. The IUPAC name of the compound (a) 3, 3 – Dimethyl – 1 – hydroxyl – cyclohexane (b) 1, 1 – Dimethyl – 3 –cyclohexanol (c) 3, 3 – Dimethyl – cyclohexanol (d) 1, 1 – Dimethyl – 3 – hydroxy cyclohexane 15. The electrophile involved in this reaction is (a)  CHCl 3 23 16. In the following sequence of reaction, the compound ‘B’ is: (a) Ethyl Iodide (b) Ethyl Magnesium iodide (c) Ethanal (d) none 17. o – Nitrophenol is less soluble in water than p – and m – nitrophenol because (a) o – Nitrophenol shown intramolecular H – bonding (b) o – Nitrophenol shown intermolecular H – bonding (c) Melting point of o – Nitrophenol is lower than those of m- and p – isomer (d) O – Nitrophenol is more volatile in steam than m- and p – isomer 18. C6H5 – O – CH3 , when treated with HI at 373K, the following are the products (a) CH3 – OH and C6H5I (b) C6H5I and CH3I (c) CH3I and C6H5OH (d) C6H5OH and CH3 – OH 19. Ether reacts with conc. H2SO4 to form (a) Alkyl free radicals (b) Oxyanion (c) Zwitter ion (d) Oxonium ion 20. Formation of starch solution to ethyl alcohol does not require (a) Diastage (b) Invertage (c) Maltage (d) Zymase ANSWERS 1. (a) 2. (d) 3. (c) 4. (c) 5. (a) 6. (a) 7. (c) 8. (b) 9. (a) 10. (a) 11. (c) 12. (b) 13. (d) 14. (c) 15. (b) 24 16. (b) 17. (a) 18. (b) 19. (d) 20. (b) Two- or Three-Mark Questions: 1. Write the equations, what happens when ethyl alcohol vapour is passed over reduced copper at 3000C. Complete the reaction: R  CH 2  OH  A  ( B ) PI 3 ASNO 2 2. 3. Complete the reaction: 4. How will you convert methanol to ethanol and vice versa? 5. Explain, why ethanol is less acidic than phenol? 6. How will you convert ethanol to 2 – hydroxylbut-3-enoic acid? 7. Identify A, B, C, D in the following sequence of reaction. 8. How can you carry nitration in phenol? Give equation. 9. What is Reimer –Tiemann Reaction? 10. How can you prepare aspirin from salicylic acid? Give equation. 11. Explain acidity of Phenol. How substituents affect acidity of phenol. 12. Complete the reactions: C6H5OH + CHCl3 + KOH → 13. Convert phenol to picric acid. 14. Write the mechanism of the reaction of HI with methoxymethane. 15. Predict the product A and B: 16. Give an example for the synthesis of unsymmetrical ether by Williamson synthesis. Long Questions: 1. Discuss the electrophilic substitution reaction like halogenations, nitration and Friedel Craft reaction of Aryl Alkyl Ether. 2. Describe general method of preparation of alcohols (any two). How does it react with? (a)Na (b) PCl5 (c) CH3COOH 3. How can you distinguish between 10, 20 and 30 alcohol by oxidation method? 4. (a) How ethanol is manufactured from starch? (b) What happens when conc. H2SO4 reacts with excess of ethanol? 5. Describe the preparation of phenol from benzene sulphonic acid. How phenol reacts with? (a) Sulphuric acid (conc.) (b) dil. HNO3 (c) CH3Cl in presence of anhy. AlCl3 6. (a) Write down the preparation of ethyl alcohol from ethylene. (b) What happens when ethyl alcohol is heated with (i) iodine/NaOH (ii) PCl5 (iii) CH3COOH. 25  Unit – VIII Aldehyde, Ketones & Carboxylic acid Group - A MCQ: 1. The compound that reduces Tollen’s reagent is _____________ (a) CH3COCH3 (b) CH3CHO (c) CH3COOH (d) CH3CH2OH 2. 40% aqueous solution of formaldehyde is called (a) Formation (b) Urotropine (c) Bake lite (d) None of these 3. ______________ respond Cannizzaro reaction. (a) HCHO (b) C6H5CHO (c) CC3CHO (d) all of these 4. ______________ respond Aldol condensation. (a) CH3CHO (b) C6H5CHO (c) HCHO (d) None of these 5. _________ do not respond iodoform reaction. (a) HCHO (b) CH3CHO (c) CH3COCH3 (d) CH3CH2OH 6. The reagent with which both acetal dehyde and acetone react easily is __________. (a) Tollen’s reacgent (b) Schiff’s reagent (c) Fehling reagent (d) Grignard reagent 7. When acetal dehyde react with Fehling solution. It gives a precipitate of _____________. (a) Cu (b) CuO (c) Cu2O (d) None of these 26 8. Aldehyde can be distinguished from ketone by using _____________. (a) Schiff’s Reagent (b) Conc. H2SO4 (c) anhydrous Zn (d) resorcinol 9. Formaldehyde react with Ammonia to give _____________. (a) Urotropine (b) Formalin (c) Bakelite (d) None of these 10. Which reduce Tollen’s reagent? (a) CH3COOH (b) C6H5COCH3 (c) HCHO (d) None of these (a) C2H5I (b) CHI3 (c) C2H5OH (d) CH3CHO 12. Cannizzaro’s reaction is an example of __________. (a) Oxidation (b) Reduction only (c) Disproportional (d) None of these 13. Formation of Cyanohydrin from a ketone an example of _______________. (a) Electrophilic addition (b) Nucleophilic addition (c) Nucleophilic substitution (d) Electrophilic substitution 14. Phenol-formaldehyde resin is called ________. (a) Nylon (b) Bake lite (c) Iodoform (d) None of these 15. Calcium formate heated to give ______. (a) HCHO (b) CH3CHO (c) CH3COCH3 (d) CH3CH2OH 27 16. Acid chloride can be reduced to Aldehyde with H2 in boiling xylene using Pd as catalyst supported by BaSO4 is called ___________ (a) Stephen’s reduction (b) Rosenmond reduction (c) Aldol condensation (d) Clemmenson’s reduction 17. The catalyst X is _________. (a) Pd + BaSO4 (b)CrO2Cl2 + CCl4 (c)SnCl2 + HCl (d) CrO3 18. The conversion of toluene to benzaldehyde in presence of CrO2Cl2 and CCl4 is called _______. (a) Etard’s reaction (b) Stephen’s reduction (c) Gatterman reaction (d) Sand Meyer’s reaction 19. X is ____________. (a) HCHO (b) CH3CHO (c) CH3COCH3 (d) CH3CH2OH 20. Which acid is strongest? (a) CCl3COOH (b) Cl2CHCOOH (c) ClCH2COOH (d) CH3COOH 21. HCOOH is soluble in water due to ___________. (a) Inter molecular ‘H’ bonding (b) Intra molecular ‘H’ bonding (c) All of these (d) None of these 22. Which of the following cannot reduce Fehling solution? (a) Acetic acid (b) Formaldehyde (c) Acetaldehyde (d) Formic acid 23. _____________ reduce HgCl2 to Hg2Cl2: (a) HCOOH (b) NH3 (c) CCl4 (d) CH3COOH 24. ‘B’ is ___________. 28  (a) Carboxylic acid (b) Aldehyde (c) Ketone (d) Amines 25. ‘Z’ is __________. (a) Benzene (b) Benzoic acid (c) Benzaldehyde (d) Toluene 26. HCOOH can not be distinguished from CH3COOH by _____________. (a) Na2CO3 (b) Tollen’s reagent (c) Fehling solution (d) Schiff’s reagent 27. ‘A’ is _____________. (a) Benzaldehyde (b) Benzoic acid (c) Phenol (d)Benzophenone 28. Strings of bee contain __________. (a) Formalin (b) Formic acid (c) Benzene (d) Acetic acid 29. __________ weakest acid. (a) F – CH2COOH (b) Cl – CH2COOH (c) Br – CH2COOH (d) I – CH2 – COOH 30. ____________ is stronger than benzoic acid. (a) P – Methyl benzoic acid (b) P – Chloro benzoic acid (c) P – Nitro benzoic acid (d) O – Chloro benzoic acid Group – B 31. Methyl Cyanide on hydrolysis gives ____________. 32. Identify A and B in the following reaction. 33. What is vinegar? 34. Which acid does not contain – COOH group? 35. What is Tollen’s reagent? 36. Write the IUPAC name of 29 37. Name the compound which ozonolysis to give only Acetaldehyde. 38. ‘X’ is ____________. 39. ‘X’ is ________ and reaction is ______________. 40. Write the structure of urotropine. 41. Urotropine used as _____________. 42. What is Fehling solution? 43. Calcium acetate heated to give ___________. 44. Name the functional isomer propanone (CH3COCH3). 45. Which reagent distinguish pentan- 2 - one and pantan – 3 – one? 46. Write the decreasing order of acidity of O – Toluic acid, Benzoic acid, M – Toluic acid, P – Toluic acid. 47. ‘A’ is ______________. 48. This reaction is called ____________. 49. Write one use of HCOOH. 50. Which acid reducing tollen’s reagent and fehling solution? 51. 2C6H5CHO + conc. NaOH → X + 4 52. In esterification __________ of alcohol and ________ of Carboxylic acid are removed as water. 53. Ethanamide an heating with P2O5 gives _______________. 54. Williamson’s synthesis involves the reaction of ____________ with ___________. 55. Alkaline hydrolysis of ester is called ____________. 56. Ketone on reduction in neutral or alkaline medium give ___________. 57. Sodalime decarboxylation of sodium propionate gives ___________. 58. Toluene an oxidation with CrO2Cl2 gives __________ and the reaction is called _________. 59. Monocarboxylic acid reacts with _______ to give pure acid chloride. 60. Isopropyl alcohol an oxidation gives __________. Group – A (ANSWERS) 1. (b) 2. (a) 3. (d) 4. (a) 5. (a) 6. (d) 7. (c) 8. (a) 30 9. (a) 10. (c) 11. (b) 12. (c) 13. (b) 14. (b) 15. (a) 16. (b) 17. (a) 18. (a) 19. (b) 20. (a) 21. (a) 22. (a) 23. (a) 24. (a) 25. (b) 26. (a) 27. (b) 28. (b) 29. (d) 30. (a) Group – B (ANSWERS) 31. CH3COOH 32. A → C6H5COCl B → C6H5CHO 33. 6 – 10% dilute solution of CH3COOH 34. Picric acid 35. Ammoniacal solution of AgNO3 solution 36. Propane – 1, 2, 3, - tricarboxylic acid 37. CH3 – CH = CH – CH3 41. urinary antiseptic 42. Alkaline solution of CuSO4 contains Sodium PotasiumTartarate 31 43. Acetone (CH3COCH3) 44. Propanal (CH3CH2CHO) 45. NaOH + I2 46. O – Toluic acid > Benzoic acid > M – Toluic acid > P – Toluic acid 47. C6H5CH2OH 48. Hell – Vohlard Zelinsky reaction 49. 50. HCOOH 51. X = C6H5CH2OH Y = C6H5COOH 52. H and OH 53. Ethanenitrile 54. RX and R-O-Na 55. Saponification 56. Pinacols 57. Ethane 58. Benzaldehyde, Etard’s reaction 59. SOCl2 60. Acetone Group – C Two and Three Marks each 1. Discuss Reimer – Tiemann reactions. 2. Which is more acidic and why HCOOH and CH3COOH. 3. Why Cl – CH2 – COOH is stronger than CH3COOH? 4. Convert HCOOH to CH3COOH and vice versa. 5. Convert HCOH to CH3CHO and vice versa. 6. Write the uses of Benzoic acid. 7. What is Cannizzaros reaction? 8. Discuss Iodoform recation. 9. Compare the acid strength of Carboxylic acid and Phenol. 10. How will you distinguish between CH3CHO and HCHO? 11. Distinguish between CH3CHO and C6H5CHO. 12. What happens when benzaldehyde is treated with Fehling solution and why? 13. Write with equation how urotropine is formed. 14. Give two test to distinguish between HCOOH & CH3COOH. 15. Why aldehyde are more reactive than ketone? 16. Explain Clemmension’s reduction with examples. 17. Convert Benzene to Benzoic acid. 18. How Benzoic acid converted to Benzaldehyde?  19. C 2 H 5OH PCl 5 A KCN  B H C SOCl 3O 5 D Identify A, B, C, D. 20. What is esterification? Give examples. 21. How will you distinguish between benzoic acid and phenol? 22. How acetaldehyde is prepared from (i) Calcium acetate (ii) CH3CN (iv) CH3CH2OH 23. How HCHO is prepared from 32  (i) CH2Cl2 (ii) (HCOO)2Ca (iii) CH3OH 24. How benzoic acid is prepared (any three)? 25. Discuss Etard’s reaction. 26. Compound ‘A’ C5H2O O form phenyl hydrazone and gives negative tollen’s reagent and iodoform test. Compound ‘A’ on reduction gives n-pentane. Write the structure of ‘A’. Explain the reaction. 27. How HCHO react with (i) HCN (ii) NaHCO3 (iii) CH3MgBr 28. How C6H5CHO react with (i) NH3 (ii) Conc. HNO3 (iii) Conc. H2SO4 29. How tert. Butyl alcohol is prepared from CH3COOH? 30. What happens when CH3CHO react with iodine in dil. NaOH. Give equation. 31. How will you prepare phenyl hydrazone of acetone? Indicate with equations. 32. Why Methanal is a gas but Methanol is a liquid. 33. How will you differentiate (i) Ethyl alcohol and acetone (ii) Acetaldehyde and Acetic acid 34. Explain why HCHO is more reactive than CH3CHO. 35. Give simple chemical test to distinguish between. The following pairs of compounds (i) Benzaldehyde and Acetophenone (ii) Ethanal and Propanal (iii) Phenol and benzoic acid 36. Why carboxylic acid is stronger than phenol although phenoxide ion has a greater number of resonating structures? 37. Highly brunched carboxylic acids are less acidic than unbranched acid, why? 38. Why pure HCN between to react with aldehyde? 39. Why boiling point of carboxylic acid are higher than those of Aldehyde and Ketones? 40. Convert CH3COOH to CH3NH2. 41. How Acetone is obtained from Ethanol. 42. An organic compound ‘A’ (C3H4) on hydration in presence of H2SO4/HgSO4 gives compound ‘B’ (C3H6O) compound ‘B’ gives white crystalline product (C) with sodium hydrogen sulphite. It gives negative tollen’s test and form test ‘A’. Identify A, B, C and write. 43. It is necessary to control the PH of medium during the reaction of aldehyde and ketone with Ammonia derivative. Explain. 44. Complete the reaction. 33 45. What is mean by the following term? Give an example in each case? (i) Cyanohydrin (ii) Semicarbazide (iii) Aldol (iv) Oxime (v) 2,4 – DNP derivative. 46. Show how the following compound can be converted to benzoic acid. (i) Ethyl benzene (ii) Acetophenone (iii) Styrene 47. Convert the following in two steps (i) Propanone to Propene (ii) Benzoic acid to Benzaldehyde (iii) Benzaldehyde to 3 – Phenyl Propanol 48. HCHO gives Cannizzaro reaction but CH3CHO does not. Why? CH 3COOH  A  NH 3   2  B Br  C heat KOH  ,  D CH 3 I 49. identify A, B, C, D. (excess) 50. Write the increasing order of acidity of the following compound with proper reason. HCOOH, C6H5COOH, CH3COOH. Group - D Long Questions: 1. Describe two general methods of preparation of ketones. State with equation how acetone reacts with (a) Phenyl hydrazine (b) HCN (c) I2 + NaOH 2. How acetone is prepared. How acetone react with (a) NH2OH (b) 2, 4 – DNPH (c) CH3MgBr 3. How Benaldehyde is prepared from (a) Toluene (b) Benzoyl Chloride. 34  How does it react with (i) HCN, (ii) Conc. HNO3 (iii) Cl2 + Anhy. AlCl3. 4. How Acetaldehyde is prepared (any three). How does it react with (a) NaOH (b) NaHSO3 (c) Tollen’s reagent 5. How Acetaldehyde and Acetone are distinguished. How does Acetaldehyde react with? (a) Phenyl hydrazine (b) Fehling solution (c) I2 + NaOH 6. How Acetic acid is prepared from CH3MgBr what happens when acetic acid reacts with (i) NH3 (ii) LiAlH4 (iii) C2H5OH (iv) PCl5 7. How monocarboxylic acid is prepared from ester and alkyl cyanide. How does it react with? (a) SOCl2 (b) NaHCO3 (c) P2O5 8. How benzoic acid is prepared from (a) Toluene (b) Grignard Reagent How CH3 – COOH can be converted to Ethane. Explain its acidity with Acetic acid. 9. How Acetic acid is prepared from (i) CH3MgBr (ii) CH3COOC2H5 (iii) CH3CH2OH (iv) CH3CN Compare the acidity of CH3OH, F – CH2 – COOH, Cl – CH2 – COOH. 10. How Acetic acid is prepared from vinegar process. How does CH3COOH react with (i) PCl3 (ii) P2O5 (iii) C2H5OH (iv) Na. Write two uses of it. 11. Describe two method of preparation and four chemical properties of Acetone. 12. Explain the following with examples (a) Cannizzaro’s reaction (b) Aldol condensation (c) Iodoform reaction (d) Perkin reaction 13. An organic compound contains 54.54% Carbon, 9.1% Hydrogen and rest oxygen. The vapour density of the compound is 22. The compound formed a crystalline compound with NaHSO3solution, and it gave red ppt. with Fehling solution. Identify the compound and give the reaction involved. 14. How HCHO is prepared (any two) how does it react with (a) NH3 (b) conc. NaOH (c) Tollen’s reagent (d) CH3MgBr 15. An organic compound (A) molecular formula C8H16O2 was hydrolyzed with dil. H2SO4 to a give Carboxylic acid (B) and on alcohol (C) oxidation of ‘C’ with Chromic acid produce (B). (C) On hydration gives butene. Write the equation for the reaction involved. 16. Compound A(C6H12O2) on reduction with LiAlH4 yielded two compounds ‘B’ and ‘C’. The compound ‘B’ an oxidation gave ‘D’ which when treated with aqueous alkali and subsequent 35  heating give ‘t’ which hydrogenation gives ‘C’. The compound ‘D’ was oxidized further to give ‘F’ which was a monoboric acid.(M.wt = 60) Deduce the structure of A, B, C, D, E and F. 17. Discuss the reaction used to distinguish between Aldehyde & Ketone. Write the order of reactivity of HCHO, CH3CHO, CH3COCH3. 18. How can you convert: (a) Acetaldehyde to Acetone (b) Methanal to Ethanal (c) Acetylene to Acetone (d) Ethanal to 2 – hydroxy – propanoic acid 19. What happens when (a) Acetyl chloride treated with H2 in presence of Pd/BaSO4 (b) Mixture of Calcium acetate and Calcium formate is heated (c) Propyne treated with dil. H2SO4 in presence of HgSO4 (d) HCHO treated with NH3. 20. Discuss the following Name reaction (a) Rosenmond reduction (b) Stephen reduction (c) Clemmenson’s reduction (d) Wolf-kishner reduction (e) HVZ reaction (f) Kolbe’s reaction (g) Schmidt reaction ********************** 36  Unit – IX Amines Group - A MCQ: 1. Reaction between primary amine, CHCl3 and alcoholic KOH is called ________. (a) Aldol condensation (b) Cannizzaro’s reaction (c) Fridel-craft reaction (d) Carbylamine reaction 2. In Hoffmann’s Bromamidereaction, an amide is converted to _________. (a) Primary amine (b) Secondary amine (c) Tertiary amine (d) All of these 3. Acetamide is converted to Methylamine when it is heated with (a) H2SO4 (b) NaOH + Br2 (c) aq. KOH (d) NaNO2 + HCl 4. The product formed during hydrolysis of methyl cyanide in acid medium: (a) CH3CONH2 (b) CH3COOH (c) CH3CHO (d) CH3CH2 – COOH 5. Which of the following gives dyes test? (a) Aniline (b) Methylamine (c) Ethylamine (d) Diphenyl amine 6. C 6 H 5 NO2 Sn HCl   ’X’: ‘X’ is ___________. (a) C6H5NH2 (b) C6H5NO2 (c) C6H5 – NH - NH2 (d) C6H6 7. Which of the following will react with CH3COCl (a) Dimethyl amine (b) Trimethyl amine (c) Dimethyl ether (d) None of these 8. Which of the following Reagent convert Nitrobenzene to Aniline? (a) Sn (b) Sn + HCl (c) LiAlH4 (d) SnCl2 37 9. Acetamide treated with _________ reagent to give CH3 – NH2. (a) PCl5 (b) Sodalime (c) conc. H2SO4 (d) NaOH + Br2 10. Conversion of phthalimide to primary amine is called __________ reaction: (a) Gabiel Phthlimide (b) Schmidt (c) Mendius (d) Curtius reaction 11. R  COOH  N 3 H conc  R  NH 2  N 2  C 2 , this reaction is called ______.. H 2 SO4 (a) Gabiel Phthlimide (b) Schmidt (c) Mendius (d) Curtius reaction 12. When alkyl isocyanates are boiled with alkali and undergo hydrolysis to give ________. (a) 10 amine (b) 20 amine (c) 30 amine (d) None of these 13. R – NH2 + CHCl3 + 3KOH → R-X + 3KCl + 3H2O, ‘X’ is ____________. (a) R – CN (b) R – NH2 (c) R – NC (d) R – OH 14. Aniline reacts with Bromine – water to form_________. (a) 2, 4, 6 – Tribromoaniline (b) p-bromoaniline (c) o-bromoaniline (d) m- bromoaniline 15. Which give carbylamine test? (a) CH3 – NH2 (b) CH3 – NH – CH3 (c) (CH3)3N (d) None of these 16. Which of the following will most stable? 17. C4H11N has __________ no of isomer. (a) 2 (b) 6 (c) 4 (d) 8 38 18. ‘X’ is ___________. (a) CH3CH2 – NH2 (b) CH3 – NH2 (c) CH3NC (d) None of these 19. Hinsberg Reagent is ____________. (a) C6H5Cl (b) C6H5SO2 (c) C6H5SO2Cl (d) C2H5Cl 20. IUPAC name of (CH3)2 CH – Nh2. (a) Propanamine (b) Propan – 2 – amine (c) Propan – 1 – amine (d) N – methyl ethanamine Group – B 21. Nitrosoamine is insoluble in water on heating with conc. H2SO4, they give secondary amines. The reaction is called __________. 22. Primary amine reacts with NaNO2 and HCl gives _____________.  23. CH 3CN  2 H X H Y , Y is _________. 3O 24. Which amine does not react with acetyl chloride? 25. When CH3CONH2 react with NaOBr, The product is _________. 26. Among Methyl amine, Dimethyl amine, trimethyl amine which is strongest base. 27. Primary amines are identified by __________ reaction. 28. Mendius reaction converts Alkyl cyanide to ____________. 29. An organic compound ‘A’ in treatment with NH3 gives ‘B’ which an heating gives ‘C’. ‘C’ on treating with Br2 and KOH gives ethyl amine. ‘A’ is _______. 30. Nitrogen in amine is ________ hybridized. 31. Lower amines are soluble in water due to _________. 32. Basic nature of amines is due to ______. 33. Aniline on heating with fuming sulphuric acid gives ___________. 34. This reaction is called __________. 35. When B.D.C. react with CuCl and HCl, it forms chlorobenzene the reaction is called _________. 36. B.D.C. when react with phenol in alkaline medium (PH = 9 – 10) at 0 0C gives ___________. 37. ‘X’ is _____________. 38. ‘Y’ is ___________. 39. B.D.C. can be converted to phenyl hydrazine in presence of ___________. 39 40. Phenol react with NH3 in presence of ZnCl2 at 3000C to produce ________. 41. A(C3H9N) react with benzene sulphonyl chloride to give a solid substance insoluble in alkali. Give a structure ‘A’. 42. Write the IUPAC name of 43. Lower aliphatic amines are soluble in water due to ______________. 44. C6H5NH2 + CHCl3 + 3KOH → ‘X’ + KCl + 3H2O. ‘X’ is ______________. 45. Which isomeric amine with formula C3H9N is least basic? 46. Give an example of Sandmeyer reaction. 47. Which indicator is obtained by coupling diazonium salt of sulphanilic acid with N, N – dimethyl aniline? 48. Reaction of HNO2 with primary amine in the cold gives __________. 49. Action of HNO2 an ethyl amine gives ____________. 50. CH 3Cl KCN  A   B , identify ‘B’. Ni / H 2 Group – A (ANSWERS) 1. (d) 2. (a) 3. (b) 4. (b) 5. (a) 6. (a) 7. (a) 8. (b) 9. (d) 10. (a) 11. (b) 12. (b) 13. (c) 14. (a) 15. (a) 16. (b) 17. (d) 18. (a) 19. (c) 20. (b) 40  Group – B (ANSWERS) 21. Liberman’s nitroso reaction 22. Primary alcohol 24. Tertiary amine 25. CH3 – NH2 26. Dimethyl amine 27. Carbylamine 28. Primary amine 29. CH3CH2 – COOH 30. SP3 31. Hydrogen bonding 32. lone pair of electrons 33. Sulphanilic acid 34. Baltz – Schiemann reaction 35. Sandmeyer reaction 36. P – Hydroxy Azobenzene 38. Benzoic acid 39. SnCl2 + HCl 40. Aniline 41. CH3 – CH2 – NH – CH3 42. N – Ethyl – N – methyl propanamine 43. Hydrogrn bonding 44. Phenyl isocyanide (Carbylamine) 45. (CH3)3N 47. Methylorange 48. Diazonium salt 49. C2H5OH 50. CH3 – CH2 – NH2 (ethylamine) Group – C Two/ Three Marks each: 1. Discuss carbylamines reaction. 2. What is Hofmann bromamide reaction? 3. Why Aliphatic amines are stronger base then aromatic amines? 4. Which is more basic CH3 – NH2 or Aniline (C6H5NH2)? 5. Convert (a) Aniline to nitrobenzene (b) Aniline to chlorobenzene 6. Convert (a) nitrobenzene to B.D.C. (b) B.D.C. to benzoic acid 7. Illustrate the following reaction with an example. 41  (i) Sandmeyer reaction (ii) Coupling reaction 8. Why Amines are more basic than alcohol? 9. Distinguish between ethylamine and aniline. 10. Arrange the following compound in an decreasing order of basic strength in their aqueous solution. NH3, CH3 – NH2, (CH3)2NH, (CH3)3N. Explain why? 11. Draw the structure of (i) prop-2-en-1-amine (ii) N-methyl ethanamine (iii) M-methanol Propanamine 12. How can you convert (i) aniline to nitrobenzene (ii) Aniline to chlorobenzene. 13. What is diazotization reaction? 14. Why in non-polor solvent, aniline form a mixture of 4-bromoaniline(major) and 2- bromoaniline (minor) product with Bromine and not 2, 4, 6 – Tribromo aniline although – NH 2 group in aniline is o – and p – directing? Explain. 15. An aromatic compound ‘A’ on treatment with aqueous ammonia and heating form compound ‘B’ which on heating with Br2 and KOH forms compound ‘C’ of M.F. C6H7N. Write the structure and IUPAC name of compound A, B, C. 16. Aniline does not undergo Fridel-Craft reaction. Explain. 17. Distinguish (a) Ethylamine and diethyl amine (b) Di-ethylamine and Triethylamine 18. Identify A, B, C in the following reactions: 19. Explain why (i) Primary amines have higher boiling point than tertiary amine. (ii) Amides are weaker base than amines 20. Discuss the following reaction (a) Gottermann reaction (b) Gumberg reaction (c) Schotter – Baumann reaction 21. Convert (i) Toluene to P – toluidine (ii) Aniline to P – nitrobenzene 22. How can you prepare the following from aniline? (a) Iodobenzene (b) Nitrobenzene (c) Chlorobenzene 23. Convert (a) Benzene to B.D.C. (b) nitrobenzene to benzene 24. How the following compound are synthesized from B.D.C. (a) Phenol (b) Benzene (c) Diphenyl 42 25. Discuss the term (a) Ammonolysis (b) Acetylation (c) Acylation (d) Zwitter ion 26. How can you prepare p-hydroxy azobenzene from nitrobenzene?  27. C6 H 5 N 2Cl CuCN  A H   B  2O / H  C , identify A, B, C. Write the structure. NH 3 28. Why excess mineral acid is used in diazo reaction? 29. Identify A, B, C 30. Convert Toluene to m-nitrotoluene. 31. Convert Benzene to 1, 3, 5 – tribromobenzene. 32. How p-hydroxybenzoic acid is prepared from toluene? 33. How m-Bromophenol is prepared from benzene? 34. Convert p-Toluidine to m-bromotoluene. 35. How Aniline can be converted to nitrobenzene? H O Complete the reaction C 2 H 5 OH  5 A KCN  B   C  3 D. PCl NH 36. 3 37. Describe a test to distinguish between Aniline, N-methylaniline, N-Ethyl-N-methylaniline. 38. How primary, secondary, tertiary amines are separated? 39. How aniline react with (i) Acetic anhydride (ii) Benzoyl chloride (iii) NaNO2 + HCl 40. How will prepare ethyl amine from (i) Methyl cyanide (ii) Propanamide (iii) Nitro ethane Group – D Long Questions: 1. How is Benzene diazonium chloride prepared from Aniline? How does B.D.C. react with (a) KI (b) ice cold alkaline phenol (c) CuCN/HCN 2. How primary, secondary, tertiary amines are distinguished? Discuss the basicity of amines. 3. Describe Hinsberg test to distinguish between primary, secondary, tertiary amines. Give chemical equation. Mention its uses arrange the following in order of increasing basic strength. Aniline, ethylamine, ethane 4. How ethyl amine is prepared (any two)? How does it react with (a) Hinsberg reagent (b) CHCl3 + KOH (c) C2H5I 5. Complete the reaction (a) CH 3 NH 2  CHCl 3 KOH  (b) CH 3  NH 2  CH 3 I (excess) 43  (c) C6 H 5 NH 2  CH 3COCl (d) C 2 H 5 NH 2  HNO2 6. How the following compounds are synthesized from B.D.C. (a) Benzene (b) Phenol (c) Chlorobenzene (d) Iodobenzene (e) Diphenyl (f) Fluoro benzene 7. How methyl amine is prepared (any two)? How does it react with? (i) CHCl3 + KOH (ii) HCl (iii) CH3COCl Why CH3 – NH2 is more basic than NH3? 8. How aniline is prepared (any two)? How does it react with? (i) NaNO2 + HCl at 00C (ii) H2SO4 (conc.) (iii) conc. HNO3 + H2SO4 (iv) Br2. Write its uses. 9. Convert (a) Toluene to p-toluidine (b) Aniline to benzylamine (c) Aniline to p-Bromoaniline (d) Benzoic acid to Aniline. 10. What is Aryl Diazonium salt? Why it is more stable than alkyl diazonium salt? Discuss the synthetic uses of Benzene diazonium chloride. 11. Write notes (a) Coupling reaction (b) Diazotization (c) Sandmeyer reaction 12. How can benzene diazonium chloride is prepared from nitrobenzene? How can you prepare (i) Iodobenzene (ii) benzoic acid from B.D.C. 13. How you will be obtained: (i) Nitrobenzene from azobenzene (ii) Iodobenzene from nitrobenzene (iii) nitrobenzene from azobenzene ********************** 44  Biomolecules Group - A MCQ (1 Mark each): 1. Which base is present in RNA but not in DNA? (a) Uracil (b) Cytosine (c) Guanine (d) Thymine 2. Vitamin ‘C’ is the compound called ________. (a) Riboflavin (b) Ascorbic acid (c) Rabinose (d) Thiamine 3. Which amino acid has lmidazole ring? (a) Alanine (b) Lecine (c) Tyrosine (d) Histidine 4. Helical structure of protein is stabilized by (a) Peptide bond (b) H-bond (c) Vander-waal’s force (d) Dipole association 5. Which of the following monosachloride is a pentose? (a) Glucose (b) Fructose (c) Arabinose (d) Galactose 6. Starch is hydrolyzed to maltose, the enzyme used is known as: (a) Invertase (b) Maltose (c) Zymase (d) Diastase 7. Diabates is detected using _________ for testing urine of patients: (a) Fehling solution (b) Tollen’s reagent (c) Balyer’s reagent (d) Besedict solution 8. In Fructose the possible optical isomers are ____________. (a) 12 (b) 8 (c) 16 (d) 4 9. Which is not a reducing sugar? (a) Glucose (b) Fructose (c) Mannose 45  (d) Sucrose 10. The enzyme which is active in breaking down protein into amino acid is ______. (a) zymose (b) pepsin (c) insulin (d) amylase 11. Which of the following is an example of Globular protein? (a) Keratine (b) Myosin (c) Collagen (d) Myoglobi 12. Which of the following pair give positive Tollen’s test? (a) Glucose & Fructose (b) Glucose & Sucrose (c) Hexanol & Hexanol (d) Fructose & Sucrose 13. The complete hydrolysis of cellulose gives __________. (a) D-fructose (b) D-ribose (c) D-glucose (d)L-glucose 14. Which amino acid has Phenolic-OH group as its backbone? (a) Glycine (b) Leucine (c) Sexine (d) Tyrosene 15. Which α-amino acid contain aromatic side chain? (a) Pyroline (b) Tyrosine (c) Valine (d) Serine 16. Which of the following is an example of ketohexose? (a) Monnose (b) Galactose (c) Maltose (d) Fructose 17. Which of the following is Levorotatory? (a) Glucose (b) Sucrose (c) Fructose (d) None of these 18. Enzyme is a ___________ (a) Carbohydrate (b) Lipid (c) Protein (d) None of these 19. Diabates mellitus is caused by the deficiency of ___________. (a) Glucose (b) Insulin (c) Iodine 46  (d) Adrenaline 20. The isoelectric point of glycine is ____________ (a) 0 (b) 6 (c) 7 (d) 27 21. The disease night blindness is caused due to deficiency of __________. (a) Vitamin – A (b) Vitamin – B1 (c) Vitamin – B2 (d) Vitamin - C 22. Nucleic acid are the polymer of (a) nucleoside (b) protein (c) nucleotide (d) adenine 23. Increased blood pressure may be caused by the excess secretion of _______. (a) Insulin (b) Adrenaline (c) Testosterone (d) Thyroxine 24. Amino acid are best represented as ______________. (a) Dipolor ion (b) isoelectric ion (c) amphoteric ion (d) Zwitter ion 25. The main structural feature of protein is __________. (a) ether linkage (b) ester linkage (c) peptide linkage (d) all of these Group – B Fill in the blanks: (1 Mark each) 26. Invertase brings about the conversion of _________ to ___________ and __________. 27. An example of fibrous protein is the __________ is hair. 28. __________ and __________ act as heat insulator of body. 29. Aspartic and glutamic acid contain ___________ side chain. 30. ______________ is the name of amide bond in protein. 31. What is the nature of peptide bond in polypeptide? 32. What is cystic fibrosis? 33. Give two examples of mono-ssacharide. 34. Which carbohydrate is called table sugar? 35. What are complex carbohydrates? 36. Name two major metabolic pathway of mono-sacuhorides catabolism. 37. Adrenaline is secreted by __________. 38. The blood clot is dissolved by the enzyme _________. 39. The helical structures of DNA was proposed by _____ and ______. 40. The two form of α-D(+) glucose and B-D(+) glucose are known as ________ of glucose. 47  Group – A (ANSWERS) 1. (a) 2. (b) 3. (d) 4. (b) 5. (c) 6. (d) 7. (d) 8. (b) 9. (d) 10. (b) 11. (d) 12. (a) 13. (c) 14. (d) 15. (b) 16. (d) 17. (c) 18. (c) 19. (b) 20. (b) 21. (a) 22. (c) 23. (b) 24. (d) 25. (c) Group – B (ANSWERS) 26. Sucrose, glucose and fructose 27. Keratine 28. fat and oils 29. Acidic 30. peptide 31. The bond are rigid and planar 32. respiratory disease 33. glucose and fructose 34. sucrose 35. polysaccharides (fruits, vegetable & whole grain) 36. Glycolysis and Citric acid cycle 37. Adrenal Medulla 38. Streptokinase 39. Watson and F-crick 40. Anomers Group – C 48 Two/Three mark each: 1. What are biomolecules, name any three? 2. What are carbohydrates, name any two? 3. What are polysaccharides, give example? 4. Write important function of carbohydrate. 5. Explain muta-rotation. 6. What is starch? Give example. 7. Write the structure of cellulose. 8. Write the ring structure of glucose. 9. Write the structure of sucrose. 10. What is amino acid? How they are classified? 11. Classify carbohydrate, give example in each case. 12. What are essential and non-essential amino acid? Give example. 13. What is zwitter ion? Give zwitter ion structure of glycine. 14. How do amino acid form protein? 15. State the difference between globular protein and fibrous protein. 16. What are enzymes? Give example and write its characteristics. 17. What is nuclei acid? Explain their role in replication. 18. Explain the function of nucleic acid. 19. What is the difference between RNA & DNA? 20. What is the function of lipids? 21. What are hormones, how are they classified? 22. What are vitamins, why there are essential to our body? Write its importance. 23. Write the function of RNA & DNA. 24. Match the groups correctly: Group – A Group – B (a) Vitamin – D (i) Xerophthalmia (b) Vitamin – K (ii) Scurvy (c) Vitamin – A (iii) Coagulation of blood (d) Vitamin – B (iv) Ricket 25. Classify the protein with example. 26. Write the importance of hormones. 27. Give the structure of proline, tyrosine, valine and serine. 28. What are glycosides? 29. Write Fischer Projection of D-Glucose and L – Glucose. 30. Why Amino acids are amphoteric in nature? Group – D Long Questions: 1. What are Carbohydrates? How they are classified, give examples in each use. 2. Discuss the structure of glucose. 3. Write the structure of (a) glucose (b) maltose (c) sucrose (d) α-D- fructose 49 4. What is protein, how are they related with amino acid? Differentiate between fibrous protein and globular protein. 5. What is protein, write their structure. Write the function of protein. 6. What are enzymes? Write their function give examples. 7. What are vitamins, how they classified? Give their source and function. 8. What is nucleic acid? Write the biological function of nucleic acid. Discuss the structure of RNA & DNA. 9. Write the characteristics of enzymes. Give mechanism of enzyme action. Write its application. 10. Write notes (a) Carbohydrate (b) Protein (c) Enzyme (d) Vitamin (e) Nucleic acid. ***************** 50