BSc Biotechnology Sem II 2018 19 Apr 2018-19 BIOTECH CHEMISTRY II PHYSICAL CHEMISTRY Question Paper - Mumbai University | munotes

Questions asked in this paper

• 1. Attempt all questions

1. Q2 All questions carry equal marks
2. Q4 Use of log table & non programmable calculator is allowed
3. Q5 For & Q4 attempt A&B OR C&D
4. Q1 Do as directed. (any fifteen) Define the following terms: 15M Fill in the blanks: 8 Enthalpy of the system is represented by the symbol 9 If work is done by the system, W is ---------. (Positive/ Negative) 10 S.I. unit of internal energy is 11 In Second order reaction, the rate of the reaction 1s proportional to the product of --------------- concentration 12 The minus sign indicating that concentration of the reactant Name the following : 13 A process in which volume of the system remains constant State True or False: 14 Decomposition of hydrogen peroxide is an example of first order 15 The half time require to complete reaction is same for first & second 16 An element that loses an electron to another chemical species in a redox chemical reaction is known as reductant Balance the following reaction: Give one word for the following: 19 A chemical reaction in which reactant involves more than one phase 20 A molecule that gain electrons Classify the thermodynamic systems based on the nature of the 4M
5. Q2 A ii) Calculate q, w and AE, when one mole of monoatomic gas expands 4M adiabatically against constant external pressure of | atm. from volume of 2.0 dm? to 8.0 dm? at 300K
6. Q2 B Explain the term ‘Entropy’ and enlist its characteristics
7. Q2 C Discuss the four steps of Carnot Cycle. 8M
8. Q2 D State the objective and limitations of thermodynamics
9. Q3 A Derive integrated rate equation for first order reaction. 8M
10. Q3 B Discuss the kinetic characteristics of second order reaction
11. Q3 C Show that for first order reaction time to complete first order reaction 8M is independent of initial concentration
12. Q3 D A second order reaction with equal initial concentration 1s 66.67 % complete in 2 hours. Calculate specific reaction rate
13. Q4 A Justify oxidation and reduction reaction proceed side by side. 8M
14. Q4 B Write the balanced chemical equation of following reaction
15. Q4 C Explain the ion electron method of balancing equations. 8M
16. Q4 D What are addition reactions? Explain using suitable examples
17. Q5 Write short note on (any three) 15M a Zeroth law of thermodynamics b Graphical method for determining order of reaction Order of reaction e Oxidation number of C in and S in

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