BSc Chemistry SEM III 2019 2020 Oct 2020 ATKT CHEMISTRY PAPER I Question Paper - Mumbai University | munotes

Questions asked in this paper

• ii) Figures to the right indicates full marks

1. Q1 A) Multiple choice Questions. (12M)
2. Q2 If AG has negative value, then the
   • a) Non-spontaneous b) Spontaneous at equilibrium
3. Q3 Sum of transport number of cations and anions of an electrolyte is
   • a) 1 b) Less than one
4. Q4 Which of the following factors affects electrolytic conductance
   • a) Nature of solute b) Inerionic interaction c) Both For tetrahedral geometry the radius ratio Tule is
5. Q6 Hybridization of ‘Be’ in
6. Q7 Number of resonating structures of CO molecule will be
7. Q8 If an electron is removed from an antibonding molecular orbital of the species, the bond
   • a) Decreases’ increases C) remains the same
8. Q9 Phenols can be Prepared
9. Q10 Epoxides are named CHEMISTRY P-I ATKT SEM-III MARKS 100 TIME 3
10. Q11 An appropriate sclvent for Grignard’s reagent formation is
11. Q12 Reaction of Epoxide with HX leads to the formation
    • B) Match the following. (05M) Vv) Sulphation of alcohols e)
    • C) State whether the following statements are True or False. (03M)
12. Q1 For strong electrolytes degree of dissociation is nearly equal to one
13. Q2 Bond order in O2 molecule is 2 marks
14. Q3 reactions are favored by less polar solvents
15. Q2 Attempt ANY FOUR of the following questions. (20M)
16. Q1 Derive equation
17. Q2 State and explain Kohlraush’s law of independent migration of ions The standard free energy change for a gaseous reaction is 71.128 KJ. Calculate the equilibrium constant of reaction at 2000K (Given, R = 8.314
18. Q5 Explain how ionization constant of weak electrolyte is determined by conductance
19. Q6 0.5 N solution of a salt occupying a volume between two platinum electrodes 1.72 cm apart of area 4.5 cm” has a conductance of 0.04Sohms. Calculate the equivalent conductivity of the solution
20. Q3 Attempt ANY FCUR of the following questions. (20M)
21. Q1 What are the conditions for the formation of covalent bond. ‘ / CHEMISTRY P-I S.Y.B.Sc ATKT MARKS 100 TIME 3 HRS
22. Q2 Explain any five conditions for
23. Q3 On the basis of molecular orbital theory explain magnetic property and bond order of
24. Q4 Calculate the lattice energy of NaCl crystal from the following data by the use of Born-Haber Cycle. Heat of atomization of Sodium = 108.7 KJmol-1, . Heat of atomization of chlorine = 120.9 KJmol", Ionisation potential of sodium = 493.7 KJmol", Electron affinity of chlorine(Cl)= -365.3 Heat of formation of NaCl
25. Q5 Give postulates of valence bond theory
26. Q6 Give difference between bonding and antibonding molecular orbitals
27. Q4 Attempt ANY FOUR of the following questions. (20M)
28. Q1 With respect to the preparation of alcohols, explain the following reactions.’
29. Q2 Write a note on claisen rearrangement of allyloxy arenes
30. Q3 reaction with mechanism
31. Q4 Explain the mechanism of alkaline hydrolysis of tert- butyl bromide giving
32. Q5 What are Grignard’s reagent? How are they prepared? What is the function of
33. Q6 Give applications of phenols
34. Q5 Attempt ANY FOUR of the following questions
35. Q1 Discuss the factors affecting transport number
36. Q2 If the equivalent conductance of Dichloroacetic acid at infinite dilution at is 388.5 Scm? and the degree of ionization 0.61. Estimate the specific conductivity of 0.1
37. Q3 Give applications of Born-Haber cycles
38. Q4 Define Hybridization. Explain the hybridization of Be in
39. Q5 Complete the following reactions CHEMISTRY P-I S.Y.B.Sc ATKT SEM-III MARKS 100 TIME 3 HRS
40. Q6 Give the ring opening reactions of Epoxides by:
    • i) Hydrolysis in acidic conditions
    • ii) Reaction with HX
    • iii) with ROH
    • iv) Reaction with HCN
    • v) Reaction with

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