BSc Chemistry SEM III 2022 2023 Oct 2023 CHEMISTRY P I Question Paper - Mumbai University | munotes

Questions asked in this paper

1. Q1 A) Multiple Choice Questions.(Any 12) (12M) If AG has negative value, then the reaction
   • a) Non-sponteneous b) Spontaneous c) at equilibrium d) Random
2. Q2 Change of free energy with pressure at constant temperature is related
3. Q3 Sum of transport number of cations and anions of an electrolyte
   • a) one b) zero c) less than one d) less than zero
4. Q4 The SI unit of specific conductance
5. Q5 What is the bond order of molecule on basis of MOT?
6. Q6 The p-orbital is inthe shape
7. Q7 What is magnetic nature of Cz molecule?
8. Q8 A type of enthalpy cycle which is used to calculate lattice energy
9. Q9 The reactivity order of alkyl halides in SN?
10. Q10 Chlorobenzene on heating with aqueous NaOH at under pressure gives phenol by
11. Q11 Among the following which is not present in Grignard reagent
12. Q12 Epoxide have __ heterocyclic ring with oxygen atom in the ring
13. Q13 Phenolic esters on heating with anhydrous AICI; rearrangement VCD/ SEM CHEMISTRY P-I 100 MARKS
14. Q14 Sodium borohydride is a very selective reagent which reduce aldehyde and ketone
15. Q15 Electrolytic conductance is due to which of following species?
16. Q16 The maximum work done by the system can be obtained at the expense of
17. Q17 Which one of the following is not a strong bond?
18. Q18 Number of electrons involved in formation of nitrogen molecule are:
    • B. Match the following. (5M)
    • i. Escaping Tendency a) lattice energies of ionic compounds
    • c) reducing agent
    • iv. d) fugacity
    • C. State whether the following statements are True or False. (3M)
19. Q1 Transport number of alkali cations are affected by hydration
20. Q2 bond is directional bond as it spreads all over the crystal lattice
21. Q3 SN ' reactions are favoured by less polar solvent
22. Q2 Attempt ANY FOUR of the following questions. (20M)
23. Q2 Discuss the factors that influence or affect transport number 3, The equilibrium constant for gaseous reaction is 169 at SOOK and it’s heat of reaction is 42.676 kJ. Find equilibrium constant at 690 K. (Given: R = 8.314 mol! ) ‘ 5, Explain all the application of Kohlrausch’s Law using using conductance measurements
24. Q6 Describe moving boundary method to determine of transport number of ion
25. Q3 Attempt ANY FOUR of the following questions. (20M)
26. Q1 What is hybridization? Give the role of hybridization by giving suitable example
27. Q2 Explain Born Haber Cycle in the formation of ionic compounds 3, Calculate the lattice energy of NaCl from the following data by the use of Born VCD/ S.Y.B.Se SEM Il CHEMISTRY P-I 100 MARKS 3 HOURS Heat of atomization of sodium = 108.7 kJ mol! Heat of atomization of chlorine = 120.9 kJ mol" Electron affinity of chlorine (Cl) = -365.3 kJ mol" Heat of formation of NaCl = - 410.9 kJ
28. Q4 Explain with the help of molecular orbital theory, the paramagnetic nature of oxygen
29. Q5 Write short note on: 1)Borne Lande equation 2)Kapustinski equation
30. Q6 What are the conditions for the formation of ionic bonds
31. Q4 Attempt ANY FOUR of the following. (20M)
32. Q1 Explain the mechanism of SN! reaction with energy profile diagram
33. Q2 What are the factors that affect SN! and SN? reaction?
34. Q3 Write note on Claisen Rearrangement of allyloxy arenes with suitable example
35. Q4 Give the ring opening reaction of epoxide by:
    • i) Hydrolysis in acidic condition
    • ii) Reaction with HX
    • iii) Reaction with ROH
    • iv) Reaction with RMgX
    • v) Reaction with HCN
36. Q5 Write down any two preparation of alcohols
37. Q6 Give applications of phenols
38. Q5 Attempt ANY FOUR of the following. (20M) Differentiate between Electronic Conductors and Electrolyte Conductors
39. Q2 0.4N solution of salt surrounding two plates of electrodes, 2.2 cm apart and 4.4 cm’ in area, was found to offer a conductance of S. Calculate the equivalent conductance of
40. Q3 Explain with the help of molecular orbital diagram, bond order of N2 molecule
41. Q4 Give applications of Born Haber’s Cycle
42. Q5 Explain the mechanism of SN? reaction with energy profile diagram
43. Q6 a) Explain Elimination-Addition Mechanism
    • b) Why o-nitrophenol is steam volatile but para isomer is not

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