B.Sc SEM 1 Past Paper 2023 Chemistry PDF

# B. Sc. (Sem. - I) Examination ## January - 2023 ### **SECH-101 : Chemistry** #### (Agricultural Chemistry) **Time: 2 Hours]** **[Total Marks: 35** 1. Answer any two of the following : 1. What is fertilizer ? Explain the classification of fertilizer. 2. Short note on mix fertilizer. 3. Explain the each any one synthesis of N and P containing fertilizer. 2. Answer any two of the following : 1. Short note on natural and plant insecticides. 2. Explain the synthesis and uses of DDT and BHC. 3. Explain the synthesis and uses of malathion. # B. Sc. (Sem. - I) Examination ## January - 2023 ### CC-CH-101: Chemistry #### (New Course) **Time: 2** ½ **Hours]** **[Total Marks: 70** 1. Answer any two of the following : 1. Explain sp³ hybridization with a suitable example. 2. Explain the energy level diagram for O2, and discuss the magnetic properties for O2. 3. Explain ion exchange method for the separation of lanthanide group elements. 2. Answer any two: 1. What is resonance ? Explain the resonance observed for nitrobenzene. 2. Explain the mechanism of SN¹. 3. Write a short note on hyperconjugation. 3. Answer any two: 1. Explain the first law of thermodynamics. 2. Write a short note on: Efficiency of Carnot engine. 3. An Carnot engine absorbs 340 calories of heat from the source at 127°C. If the efficiency of the engine is 0.72, calculate the work done and the temperature of the heat sink. 4. Answer any two: 1. Explain the Mohr method used for the determination of chloride ion. 2. Explain the titration between strong acids and strong bases. 3. Explain different methods to represent concentration with a suitable example. # B. Sc. (Sem. - I) Examination ## January - 2023 ### CC-PHY-101: Physics #### (Old Course) **Time: 2 ½ Hours]** **[Total Marks: 70** 1. (a) Attempt any two out of three : 1. Derive Cartesian form of triple scalar product. Explain its cyclic property. 2. Obtain forms of polar unit vectors for a two-dimensional motion of particle in a central force field. Obtain its formulae for radial and tangential components of acceleration. 3. Explain the physical significance of the divergence of the vector field. (b) Attempt any one out of two: 1. Explain line integration with a suitable example. 2. State and prove Stock's theorem. (c) Attempt any one out of two : 1. Explain scalar field. 2. Explain the gradient of a scalar function from partial differentiation of a scalar function. 2. (a) Attempt any two out of three: 1. Derive the resultant equation for the combination of two simple harmonic motions in the same direction having the same frequency and slight amplitude difference. Obtain the formulae for the resulting amplitude and the resulting phase and plot the position versus time graph. 2. Derive the required charge decay equation for the capacitor in discharging case of R-C Series D.C. circuit and define the capacitive time constant. 3. Write and explain superposition and maximum energy transfer theorem with a suitable example. (b) Attempt any one out of two : 1. Explain the experiment of measurement of high resistance by leakage method with circuit. 2. A solenoid of 50H inductance and 30Ω resistance is connected to a 100V battery, calculate the time taken for half of maximum current value. (c) Attempt any one out of two : 1. Write a statement of Thevenin's theorem. 2. Write the names of two A.C. bridges for measuring the capacitance. 3. (a) Attempt any two out of three : 1. Derive the equations to find Idc and Irms for a half wave rectifier. 2. Draw the circuit of a full wave rectifier and derive the equations for its ripple factor and efficiency. 3. Draw the circuit of inductor filter and explain its working and derive the equation for ripple factor. (b) Attempt any one out of two : 1. Derive the equations to find efficiency and TUF for half wave rectifier. 2. Explain the difference between P-N junction diode and Zener diode. (c) Attempt any one of two : 1. Draw only a circuit of L-C filter. 2. Draw only a circuit of full wave bridge rectifier. # B. Sc. (Sem. I) Examination ## January - 2023 ### **CC-PHY-101: Physics** #### (Old Course) **Time: 2 ½ Hours]** **[Total Marks: 70** 1. (a) Attempt any two out of three: 1. Explain sp³ hybridization. 2. Explain the energy level diagram for O2, and discuss the magnetic properties for O2. 3. Explain ion exchange method for the separation of lanthanide group elements. (b) Attempt any two: 1. What is resonance? Explain the resonance observed for nitrobenzene. 2. Explain the mechanism of SN¹. 3. Write a short note on hyperconjugation. (c) Attempt any two: 1. Explain the first law of thermodynamics. 2. Write a short note on: Efficiency of Carnot engine. 3. A Carnot engine absorbs 340 calories of heat from the source at 127°C. If the efficiency of the engine is 0.72, calculate the work done and the temperature of the heat sink. 4. (a) Attempt any two: 1. Explain the Mohr method used for the determination of chloride ion. 2. Explain the titration between strong acids and strong bases. 3. Explain different methods to represent concentration with a suitable example. # B. Sc. (Sem. I) Examination ## January - 2023 ### ES BOT-101: Botany #### (Horticulture) **Time: 2 Hours]** **[Total Marks: 35** 1. (a) Describe in detail : (any one) 1. Explain the types of Nursury management and seed treatment. 2. Explain: Branches of Horticulture. (b) Do as directed : (any two) 1. Short note on: Natural vegetative Propagation. 2. Short note on: Air layering. 3. Short note on: History of Horticulture. 2. (a) Describe in detail : (any one). 1. Explain : Classification of horticulture crops of Gujarat. 2. Describe: Bonsai tree. (b) Do as directed: (any two). 1. Write a short note: Aims of Horticulture. 2. Write a short note: Types of Garden. 3. What is Landscape? Explain topiary. 3. (a) Answer the following questions : (any three). 1. Explain: Cleft Grafting. 2. Explain: Scope of Horticulture. 3. Write a short note on Layering. 4. Write a short note: Care in Floriculture. 5. Write a short note: Landscape design. (b) Do as directed: (any five). 1. What is mulching? 2. What is scion? 3. Define: Artificial vegetative propagation. 4. Give a full form: SSC. 5. Which vegetable is used as a spice? 6. Define: Kitchen Garden. 7. What does the word 'Bonsai' mean? 8. Give an example of an economically useful plant. # B. Sc. (Sem. I) Examination ## January - 2023 ### **CCMAT-111** #### Mathematics **Time: 2.30 Hours]** **[Total Marks: 70** 1. (a) State and prove Leibnitz's theorem. OR State and prove Cauchy's mean value theorem. (b) Attempt any three : 1. If y = 2x+1/(x-1)(2x-1) then prove that y4(0) = 1464. 2. If y = x2 log x then prove that yn = (-1)n-3.2.(n-3)!.x2-n/xn 3. Prove that (x2)n = n!.Σnr=0(nCr)2.x2r. 4. Prove that Sin-1 x = x + x3/6 + 3x5/40 + 5x7/112 + ... 2. (a) Prove that Sinn x dx = 1 π --- if n= odd number 22 n-1 n-3 n-5 --- ------- ------ n n-2 n-4 OR Prove that length of arc of continues curve y = f(x), between x = a, x=b is S= ∫ba√(1+ (dy/dx)2) dx (b) Attempt any three : 1. Prove that ∫π/20x.Cosn(Sin x)dx = n-1/n n-3/n-2 n-5/n-4 ... 1/3 π/2 if n = even number n-1/n n-3/n-2 n-5/n-4 ... 2/4 (π/2 - 1/3) if n = odd number 2. Find the Limit of √(2-12) + √(4-22) + √(6-32) + ... + √(2n-n2) 3. Find the length of arc of 4y² = x³ between x=0 to x=1. 4. Suppose one branch of rectangular hyperbola x² - y² = a² rotate about X axis then prove that the volume of a cube (whose height is a form vertex) is equal to volume of a sphere (whose radius is a) # B. Sc. (Sem. I) Examination ## February - 2023 ### ESMAT-11 #### Mathematics (Set Theory & Functions) **Time: 1:30 Hours]** **[Total Marks: 35** 1. (a) If A = {1, 2, 3, 4, 5}, B = {3, 4, 5, 6, 7} then verify both De'Morgan's Laws. (b) Attempt any three : 1. If A = {a,b}, B = {c,d} and C = {d, e} then find A × (BC). 2. If A = {1, 2, 3}, B = {4, 7} then find A x B and BXA. 3. Show that A-(BUC) = (A-B)(A-C) where A = {a, b, c}, B = {b, d} and C = {c, e}. 4. If A = {1, 2, 3}, B = {4, 5, 6} and U = {1, 2, ............ 10} then find A’ B’. 2. Attempt any three : 1. If f(x) = x2+3x and g(x)=x-1 are two functions from R to R then find f(g(5)). 2. If f:R+R+, f(x) = x2 + 4√x +3 then find the value of f(4) and f(16). 3. If f(x) = 2x2 +1 and g(x) = 3x then find the value of fog and gof. 4. If f:R+R+, f(x) = x+10 draw the graph. # B. Sc. (Sem. I) Examination ## January - 2023 ### **MB 01** #### Microbiology (MB-01: Fundamentals of Microbiology) **Time: 2 Hours]** **[Total Marks: 70** 1. (a) Answer any two questions from the following: 1. Microbiology applications in fields of Agriculture and Industrial field ? 2. Explain Golden Era of Microbiology ? 3. Explain Kotch Postulate in Details ? (b) Answer any four questions from following : 1. Definition of Microbiology ? 2. Enlist Scientists Supporting ABIOGENSIS Theory ? 3. Example of Plant Pathogen with reference to Virus ? 4. Discovery of "Magic Bullet" was done by which Scientists ? 5. Give the Example of Antibiotics? 2. (a) Answer any Two questions from following: 1. Write Principle, Mode of Action, Working and Application of Autoclave ? 2. Mode of action - Halogens compounds & Alcohol. 3. Phenol Coefficient Method. (b) Answer any Three questions from the following: 1. Examples of Physical Agents used in Sterilization ? 2. Mode of Action - Gaseous Agent ? 3. Which Sterilization is knows as Cold Sterilization? 4. Who Discovered Autoclave ? 3. (a) Answer any Two questions from following 1. Explain Grams Staining? 2. Write short note on types of Dyes ? 3. SEM & TEM ? (b) Answer any four questions from the following: 1. Define stain with suitable examples. 2. Give any two examples of sporulation bacteria? 3. Draw well labeled diagram of Gram positive bacterial Cell wall ? 4. Full form of ZNCF ? 5. Examples of gram negative bacteria ? 4. (a) Answer any Two questions from following: 1. Lyophylization as an storage for Bacterial cultures. 2. Enlist various Pure Culture Techniques. 3. Short note on Various methods of Microbial Preservation ? (b) Answer any Three from the following questions : 1. Full form of DMSO ? 2. Define Pure Culture ? 3. Define Isolation ? 4. Define Media ? # B. Sc. (Sem. I) Examination ## January - 2023 ### **MB 101** #### Microbiology (Introduction to Microbiology & Microbial diversity) **Time: 2 Hours]** **[Total Marks: 70** 1. (a) Answer any two questions from following : 1. Explain two experiments which support the theory of Biogenesis. 2. Give a detailed note on Koch postulates as a germ theory of disease. 3. Write down contribution of scientists in the field of soil microbiology. (b) Answer any four questions from following: 1. Who discovered penicillin antibiotic ? 2. Who is the father of microbiology? 3. Use of "Magic bullet 606". 4. Joseph Lister introduces as an antiseptic during surgery. 5. Who gave the final proof of Biogenesis theory ? 2. (a) Answer any two questions from following: 1. Explain Whittaker's five kingdom classification. 2. Write down morphology and structure of virus. 3. Give a note on ultra structure of prokaryotic cell, Bacteria. (b) Answer any three questions from following: 1. Define L form of bacteria. 2. Give the two name of fungal spore. 3. Name the Malarial protozoa. 4. Contribution of Carl Woese's. 3. (a) Answer any two questions from following : 1. Explain phase contrast microscopy. 2. Give a note on electron microscopy. 3. Write down chemical methods of microbial control. (b) Answer any four questions from the following: 1. Write down the parts of microscope. 2. What is the use of microscope in microbiology laboratory ? 3. Enlist Physical method of microbial control. 4. Differentiate between simple and compound microscope. 5. Application of Fluorescence microscopy. 4. (a) Answer any two questions from following : 1. Write down the application of Microbiology discipline. 2. Explain scope of Microbiology in different sector. 3. Give a note on scope of Microbiology in India. (b) Answer any one from the following questions: 1. Use of genetic engineering for microorganism. 2. What is molecular farming ? # B. Sc. (Sem. I) Examination ## February - 2023 ### MB - SE 101 #### Microbiology (Virology) **Time: Hours]** **[Total Marks: 35** 1. Answer in one-two lines: 1. Define: Viroid. 2. What is virology ? 3. Full form of TMV ? 4. Who is the father of virology ? 5. Define: Prophage. 6. The spike-like projections on the viral capsid are known as ? 7. Define: capsid. 2. Discuss in detail (any two) 1. Write a note on cultivation of viruses. 2. Explain in detail about viral taxonomy. 3. Prions. 3. Discuss in detail : (any two) 1. Write a note on Lytic cycle. 2. Phage display. 3. Write a note on Lysogenic cycle. # B. Sc. (Sem. I) Examination ## February - 2023 ### **MBEL:** Microbiology: (Elective) #### (Old Course) **Time: 2 Hours]** **[Total Marks: 50** 1. (A) Answer any six Questions from the following. (Each carries 8 marks.) 1. Draw and explain basic structure of Bacterial cell. 2. Differentiate between Plant cell and Animal cell. 3. Economic importance of Fungi. 4. General characteristics of mold. 5. Economic importance of Algae. 6. Characteristics of virus. 7. Economic importance of protozoa. (B) Answer any one questions from following : 1. Function of HYPHE in fungi. 2. Importance of flagella in bacterial cell. # MBP-5331 ### **B. Sc. (Sem. I) Examination** ## January - 2023 ### **CCMAT-111** #### Mathematics **Time: 2.30 Hours]** **[Total Marks: 70** 1. (a) State and prove Leibnitz's theorem. OR State and prove Cauchy's mean value theorem. (b) Attempt any three : 1. If y = 2x+1/(x-1)(2x-1) then prove that y4(0) = 1464. 2. If y = x2 Log x then prove that yn = (-1)n-3.2.(n-3)!.x2-n/xn 3. Prove that (x2)n = n!.Σnr=0(nCr)2.x2r. 4. Prove that Sin-1 x = x + x3/6 + 3x5/40 + 5x7/112 + ... 2. (a) Prove that Sinn x dx = 1 π --- if n= odd number 22 n-1 n-3 n-5 --- ------- ------ n n-2 n-4 OR Prove that length of arc of continues curve y = f(x), between x = a, x=b is S= ∫ba√(1+ (dy/dx)2) dx (b) Attempt any three : 1. Prove that ∫π/20x.Cosn(Sin x)dx = n-1/n n-3/n-2 n-5/n-4 ... 1/3 π/2 if n = even number n-1/n n-3/n-2 n-5/n-4 ... 2/4 (π/2 - 1/3) if n = odd number 2. Find the Limit of √(2-12) + √(4-22) + √(6-32) + ... + √(2n-n2) 3. Find the length of arc of 4y² = x³ between x=0 to x=1. 4. Suppose one branch of rectangular hyperbola x² - y² = a² rotate about X axis then prove that the volume of a cube (whose height is a form vertex) is equal to volume of a sphere (whose radius is a) 3. (a) Obtain the polar equation of conic ==1+e.cos0, r where / is the length of semi-latus rectum, e is eccentricity. OR Suppose & is a scalar function and 7 and g are vector function then Prove that div(of) = $divf + f. grad . (b) Attempt any three : 1. Obtain reciprocal vector set of {(1, 1, -1), (1, -1, 1), (-1, 1, 1)}- 2. Prove that Curl(grad r") = 0 where r² = x² + y² +z². 3. Obtain the polar equation of a straight line passing through the point (2, π/6) and (√3, π/3). Also find the length of perpendicular drawn from the pole on it. 4. Prove that the focal chord of a parabola making an angle π/6 with its axis is four times its latus rectum. 4. (a) Prove that the intersection of a sphere and plane is the circle in R³ OR Obtain the equation of a tangent plane at a point (α, β, γ) on the sphere x² + y² +z² + 2ux + 2vy + 2wz + d = (0. (b) Attempt any three: 1. Obtain the equation of a sphere passing through the great circle, x² + y² +z²+10x-4y-8=0, x+y+z-3=0. 2. Show that the equation x² + y² +z²-8yz+8zx-8xy=0 represents a cone. Also find its axis and semi- vertical angle. 3. Obtain the equation of the cone passes through the line 2x=3y = -5z whose axis is the straight line x = y = z. 4. Find the equation of cylinder having radius 2 and x-1 y-1 2-1 axis is the straight line = 부부 2 3 1 # MBP-5339 ### **B. Sc. (Sem. I) Examination** ## February - 2023 ### ESMAT-11 #### Mathematics (Set Theory & Functions) **Time: 1:30 Hours]** **[Total Marks: 35** 1. (a) If A = {1, 2, 3, 4, 5}, B = {3, 4, 5, 6, 7} then verify both De'Morgan's Laws. (b) Attempt any three : 1. If A = {a,b}, B = {c,d} and C = {d, e} then find A × (BC). 2. If A = {1, 2, 3}, B = {4, 7} then find A x B and BXA. 3. Show that A-(BUC) = (A-B)(A-C) where A = {a, b, c}, B = {b, d} and C = {c, e}. 4. If A = {1, 2, 3}, B = {4, 5, 6} and U = {1, 2, ............ 10} then find A’ B’. 2. Attempt any three : 1. If f(x) = x2+3x and g(x)=x-1 are two functions from R to R then find f(g(5)). 2. If f:R+R+, f(x) = x2 + 4√x +3 then find the value of f(4) and f(16). 3. If f(x) = 2x2 +1 and g(x) = 3x then find the value of fog and gof. 4. If f:R+R+, f(x) = x+10 draw the graph. # MBP-5307 ### **B. Sc. (Sem. I) Examination** ## January - 2023 ### **MB 01** #### Microbiology (MB-01: Fundamentals of Microbiology) **Time: 2 Hours]** **[Total Marks: 70** 1. (a) Answer any two questions from the following: 1. Microbiology applications in fields of Agriculture and Industrial field ? 2. Explain Golden Era of Microbiology ? 3. Explain Kotch Postulate in Details ? (b) Answer any four questions from following : 1. Definition of Microbiology ? 2. Enlist Scientists Supporting ABIOGENSIS Theory ? 3. Example of Plant Pathogen with reference to Virus ? 4. Discovery of "Magic Bullet" was done by which Scientists ? 5. Give the Example of Antibiotics? 2. (a) Answer any Two questions from following: 1. Write Principle, Mode of Action, Working and Application of Autoclave ? 2. Mode of action - Halogens compounds & Alcohol. 3. Phenol Coefficient Method. (b) Answer any Three questions from the following: 1. Examples of Physical Agents used in Sterilization ? 2. Mode of Action - Gaseous Agent ? 3. Which Sterilization is knows as Cold Sterilization? 4. Who Discovered Autoclave ? 3. (a) Answer any Two questions from following 1. Explain Grams Staining? 2. Write short note on types of Dyes ? 3. SEM & TEM ? (b) Answer any four questions from the following: 1. Define stain with suitable examples. 2. Give any two examples of sporulation bacteria? 3. Draw well labeled diagram of Gram positive bacterial Cell wall ? 4. Full form of ZNCF ? 5. Examples of gram negative bacteria ? 4. (a) Answer any Two questions from following: 1. Lyophylization as an storage for Bacterial cultures. 2. Enlist various Pure Culture Techniques. 3. Short note on Various methods of Microbial Preservation ? (b) Answer any Three from the following questions : 1. Full form of DMSO ? 2. Define Pure Culture ? 3. Define Isolation ? 4. Define Media ? # MBP-5334 ### **B. Sc. (Sem. I) Examination** ## January - 2023 ### **MB 101** #### Microbiology (Introduction to Microbiology & Microbial diversity) **Time: 2 Hours]** **[Total Marks: 70** 1. (a) Answer any two questions from following : 1. Explain two experiments which support the theory of Biogenesis. 2. Give a detailed note on Koch postulates as a germ theory of disease. 3. Write down contribution of scientists in the field of soil microbiology. (b) Answer any four questions from following: 1. Who discovered penicillin antibiotic ? 2. Who is the father of microbiology? 3. Use of "Magic bullet 606". 4. Joseph Lister introduces as an antiseptic during surgery. 5. Who gave the final proof of Biogenesis theory ? 2. (a) Answer any two questions from following: 1. Explain Whittaker's five kingdom classification. 2. Write down morphology and structure of virus. 3. Give a note on ultra structure of prokaryotic cell, Bacteria. (b) Answer any three questions from following: 1. Define L form of bacteria. 2. Give the two name of fungal spore. 3. Name the Malarial protozoa. 4. Contribution of Carl Woese's. 3. (a) Answer any two questions from following : 1. Explain phase contrast microscopy. 2. Give a note on electron microscopy. 3. Write down chemical methods of microbial control. (b) Answer any four questions from the following: 1. Write down the parts of microscope. 2. What is the use of microscope in microbiology laboratory ? 3. Enlist Physical method of microbial control. 4. Differentiate between simple and compound microscope. 5. Application of Fluorescence microscopy. 4. (a) Answer any two questions from following : 1. Write down the application of Microbiology discipline. 2. Explain scope of Microbiology in different sector. 3. Give a note on scope of Microbiology in India. (b) Answer any one from the following questions: 1. Use of genetic engineering for microorganism. 2. What is molecular farming ? # MBP-5340* ### **B. Sc. (Sem. I) Examination** ## February - 2023 ### MB-SE 101 #### Microbiology (Virology) **Time: Hours]** **[Total Marks: 35** 1. Answer in one-two lines: 1. Define: Viroid. 2. What is virology ? 3. Full form of TMV ? 4. Who is the father of virology ? 5. Define: Prophage. 6. The spike-like projections on the viral capsid are known as ? 7. Define: capsid. 2. Discuss in detail (any two) 1. Write a note on cultivation of viruses. 2. Explain in detail about viral taxonomy. 3. Prions. 3. Discuss in detail : (any two) 1. Write a note on Lytic cycle. 2. Phage display. 3. Write a note on Lysogenic cycle. # M-5317 ### **B. Sc. (Sem. I) Examination** ## February - 2023 ### **MBEL:** Microbiology: (Elective) #### (Old Course) **Time: 2 Hours]** **[Total Marks: 50** 1. (A) Answer any six Questions from the following. (Each carries 8 marks.) 1. Draw and explain basic structure of Bacterial cell. 2. Differentiate between Plant cell and Animal cell. 3. Economic importance of Fungi. 4. General characteristics of mold. 5. Economic importance of Algae. 6. Characteristics of virus. 7. Economic importance of protozoa. (B) Answer any one questions from following : 1. Function of HYPHE in fungi. 2. Importance of flagella in bacterial cell. # MBP-5331 ### **B. Sc. (Sem. I) Examination** ## January - 2023 ### **CCMAT-111** #### Mathematics **Time: 2.30 Hours]** **[Total Marks: 70** 1. (a) State and prove Leibnitz's theorem. OR State and prove Cauchy's mean value theorem. (b) Attempt any three : 1. If y = 2x+1/(x-1)(2x-1) then prove that y4(0) = 1464. 2. If y = x2 Log x then prove that yn = (-1)n-3.2.(n-3)!.x2-n/xn 3. Prove that (x2)n = n!.Σnr=0(nCr)2.x2r. 4. Prove that Sin-1 x = x + x3/6 + 3x5/40 + 5x7/112 + ... 2. (a) Prove that Sinn x dx = 1 π --- if n= odd number 22 n-1 n-3 n-5 --- ------- ------ n n-2 n-4 OR Prove that length of arc of continues curve y = f(x), between x = a, x=b is S= ∫ba√(1+ (dy/dx)2) dx (b) Attempt any three : 1. Prove that ∫π/20x.Cosn(Sin x)dx = n-1/n n-3/n-2 n-5/n-4 ... 1/3 π/2 if n = even number n-1/n n-3/n-2 n-5/n-4 ... 2/4 (π/2 - 1/3) if n = odd number 2. Find

B.Sc SEM 1 Past Paper 2023 Chemistry PDF

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