AIPMT 2011 Prelims | Thermodynamics Question 29 | Chemistry

AIPMT 2011 Prelims

MCQ (Single Correct Answer)

-1

If the enthalpy change for the transition of liquid water to steam is 30 kJ mol^$$-$$1 at 27^oC, the entropy change for the process would be

10 J mol^$$-$$1 K^$$-$$1

1.0 J mol^$$-$$1 K^$$-$$1

0.1 J mol^$$-$$1 K^$$-$$1

100 J mol^$$-$$1 K^$$-$$1

AIPMT 2011 Prelims

MCQ (Single Correct Answer)

-1

Enthalpy change for the reaction,
4H_(g) $$ \to $$ 2H_2(g) is $$-$$869.6 kJ
The dissociation energy of H $$-$$ H bond is

434.8 kJ

$$-$$ 869.6 kJ

+ 434.8 kJ

+ 217.4 kJ

AIPMT 2011 Prelims

MCQ (Single Correct Answer)

-1

Which of the following is correct option for free expansion of an ideal gas under adiabatic condition ?

q = 0, $$\Delta $$T $$ \ne $$ 0, w = 0

q $$ \ne $$ 0, $$\Delta $$T = 0, w = 0

q = 0, $$\Delta $$T = 0, w = 0

q = 0, $$\Delta $$T < 0, w $$ \ne $$ 0

AIPMT 2010 Mains

MCQ (Single Correct Answer)

-1

Match List I (Equations) with List II (Type of processes) and select the correct option.

List I		List II
Equations		Type of processes
A.	K_p > Q	(i)	Non- spontaneous
B.	$$\Delta $$G^o < RT ln Q	(ii)	Equilibrium
C.	K_p = Q	(iii)	Spontaneous and endothermic
D.	T > $${{\Delta H} \over {\Delta S}}$$	(iv)	Spontaneous

A - (i), B - (ii), C - (iii), D - (iv)

A - (iii), B - (iv), C - (ii), D - (i)

A - (iv), B - (i), C - (ii), D - (iii)

A - (ii), B - (i), C - (iv), D - (iii)

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