044/2022

Maximum : 100 marks

Time : 1 hour and 30 minutes

1. The residual molar entropy of crystalline CO at absolute zero is:
(A) Rin2 (B) -Rln2
(0 Rin4 0) -Rln4

൭. The rate constants of a reaction at 100K and 200K are 0.02 stand 0.95. What will be the
value of activation energy, Ea of this reaction?

(^) 2.303Rx107 ൪൫ 0
(൭ 4.606Rx10? (0) 7

8. Using molecular orbital theory the bond order of 05” ion is found to be :

(A) 2 ൫ 1

4. Which among the following is not an example for liquid crystal?

(^) Ethyl p-Azoxy benzoate (B) Ethyl benzoate
(0 Cholesteryl benzoate (D) p-Azoxy phenetole
5. ೫0% a particle in one dimensional box, the difference in energy between energy levels 2-2
and n=2 was found to be 15 units. What will be the difference in energy for the levels n=2
and n=1 for this system :
(A) 6 ®) 9
‏و"‎ (0) 15

6. 71೧70 oxide exists as a white coloured substance at room temperature. On heating it turns
yellow due to:

(^) Frenkel defect (B) Schottky defect
(C) Metal excess defect (D) Metal deficiency defect

7. 3 character table of ஷே point group contains a one dimensional representation which is

symmetric to the principal rotation axis and antisymmetric with respect to the centre of
inversion, i. What Mullikan symbol should be assigned to the representation?

^) 2, ®) A,

[.7.0.]