August 2022

Question: In any spontaneous process,
[A].

only F decreases

[B].

only A decreases

[C].

both F and A decreases

[D].

both F and A increase

Answer: Option C

Explanation:

No answer description available for this question.

Question: Clayperon equation deals with the
[A].

rate of change of vapour pressure with temperature.

[B].

effect of an inert gas on vapour pressure.

[C].

calculation of ΔF for spontaneous phase change.

[D].

temperature dependence of heat of phase transition.

Answer: Option A

Explanation:

No answer description available for this question.

Question: A chemical reaction will occur spontaneously at constant pressure and temperature, if the free energy is
[A].

zero

[B].

positive

[C].

negative

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: For an irreversible process involving only pressure-volume work
[A].

(dF)T, p <0

[B].

(dF)T, p = 0

[C].

(dF)T, p > 0

[D].

(dA)T, v >0

Answer: Option A

Explanation:

No answer description available for this question.

Question: For a reversible process involving only pressure-volume work
[A].

(dF)T, p < 0

[B].

(dF)T, p > 0

[C].

(dF)T, p = 0

[D].

(dA)T, v < 0

Answer: Option C

Explanation:

No answer description available for this question.

Question: Gibbs-Helmholtz equation is
[A].

[B].

ΔF = ΔH – TΔT

[C].

d(E – TS) T, V < 0

[D].

Answer: Option A

Explanation:

No answer description available for this question.

Question: Gibbs free energy (F) is defined as
[A].

F = E – TS

[B].

F = H – TS

[C].

F = H + TS

[D].

F = E + TS

Answer: Option B

Explanation:

No answer description available for this question.

Question: Helmholtz free energy (A) is defined as
[A].

A = H – TS

[B].

A = E – TS

[C].

A = H + TS

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Melting of wax is accompanied with __________ in entropy.
[A].

increase

[B].

decrease

[C].

no change

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.