August 2022

Question: Heat of formation of an element in its standard state is
[A].

0

[B].

< 0

[C].

> 0

[D].

a function of pressure

Answer: Option A

Explanation:

No answer description available for this question.

Question: An isolated system can exchange __________ with its surroundings.
[A].

matter

[B].

energy

[C].

neither matter nor energy

[D].

both matter and energy

Answer: Option C

Explanation:

No answer description available for this question.

Question: Cp – Cv = R is valid for __________ gases.
[A].

ideal

[B].

all

[C].

very high pressure

[D].

very low temperature

Answer: Option A

Explanation:

No answer description available for this question.

Question: Degress of freedom at triple point will be
[A].

0

[B].

1

[C].

2

[D].

3

Answer: Option A

Explanation:

No answer description available for this question.

Question: Number of components (C), phase (P) and degrees of freedom (F) are related by Gibbs phase rule as
[A].

P + F – C = 2

[B].

C = P – F + 2

[C].

F = C – P – 2

[D].

P = F – C – 2

Answer: Option A

Explanation:

No answer description available for this question.

Question: Compressibility factor-reduced pressure plot on reduced co-ordinates facilitates
[A].

use of only one graph for all gases.

[B].

covering of wide range.

[C].

easier plotting.

[D].

more accurate plotting.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Critical compressibility factor for all substances
[A].

are more or less constant (vary from 0.2 to 0.3).

[B].

vary as square of the absolute temperature.

[C].

vary as square of the absolute pressure.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Compressibility factor of a gas is
[A].

not a function of its pressure.

[B].

not a function of its nature.

[C].

not a function of its temperature.

[D].

unity, if it follows PV = nRT.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Boyle’s law for gases states that
[A].

, when temperature is constant.

[B].

, when temperature & mass of the gas remain constant.

[C].

P ∝ V, at constant temperature & mass of the gas.

[D].

= constant, for any gas.

Answer: Option B

Explanation:

No answer description available for this question.