1
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Which of the following are not state functions ?
(I) q + w     (II) q
(III) w        (IV) H $$-$$ TS
A
(I), (II) and (III)
B
(II) and (III)
C
(I) and (IV)
D
(II), (III) and (IV)
2
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
For the gas phase reaction,

PCl5(g)  $$\rightleftharpoons$$ PCl3(g) + Cl2(g)

which of the following conditions are correct ?
A
$$\Delta $$H < 0 and $$\Delta $$S < 0
B
$$\Delta $$H > 0 and $$\Delta $$S < 0
C
$$\Delta $$H = 0 and $$\Delta $$S < 0
D
$$\Delta $$H > 0 and $$\Delta $$S > 0
3
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Bond dissociation enthalpy of H2, Cl2 and HCl are 434, 242 and 431 kJ mol$$-$$1 respectively. Enthalpy of formation of HCl is
A
$$-$$ 93 kJ mol$$-$$1
B
245 kJ mol$$-$$1
C
93 kJ mol$$-$$1
D
$$-$$ 245 kJ mol$$-$$1
4
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
The dissociation equilibrium of a gass AB2 can be represented as :
2AB2(g) $$\rightleftharpoons$$ 2AB(g) + B2(g)
The degree of dissociation is x and is small compared to 1. The expression relating the degree of dissociation (x) with equilibrium constant Kp and total pressure P is
A
(2Kp/P)1/2
B
(Kp/P)
C
(2Kp/P)
D
(2Kp/P)1/3
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