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Question: Entropy change of the reaction, H2O(liquid) H2O(gas), is termed as the enthalpy of
[A].

solution

[B].

vaporisation

[C].

formation

[D].

formation

Answer: Option B

Explanation:

No answer description available for this question.

Question: Partial molar free energy of an element A in solution is same as its
[A].

chemical potential

[B].

activity

[C].

fugacity

[D].

activity co-efficient

Answer: Option A

Explanation:

No answer description available for this question.

Question: During Joule-Thomson expansion of gases
[A].

enthalpy remains constant.

[B].

entropy remains constant.

[C].

temperature remains constant.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Gibbs phase rule finds application, when heat transfer occurs by
[A].

conduction

[B].

convection

[C].

radiation

[D].

condensation

Answer: Option D

Explanation:

No answer description available for this question.

Question: Change of state namely evaportation condensation, freezing and melting is an __________ process.
[A].

isothermal

[B].

adiabatic

[C].

isobaric

[D].

isochoric

Answer: Option A

Explanation:

No answer description available for this question.

Question: All gases except __________ shows a cooling effect during throttling process at atmospheric temperature and pressure.
[A].

oxygen

[B].

nitrogen

[C].

air

[D].

hydrogen

Answer: Option D

Explanation:

No answer description available for this question.

Question: In case of an __________ process, the temperature of the system increases.
[A].

isothermal compression

[B].

isothermal expansion

[C].

adiabatic expansion

[D].

adiabatic compression

Answer: Option D

Explanation:

No answer description available for this question.

Question: __________ does not change during phase transformation processes like sublimation, melting & vaporisation.
[A].

Entropy

[B].

Gibbs free energy

[C].

Internal energy

[D].

all (a), (b) & (c)

Answer: Option B

Explanation:

No answer description available for this question.

Question: Which of the following processes can not be made reversible even under ideal condition of operation?
[A].

Free expansion of a gas.

[B].

Compression of air in a compressor.

[C].

Expansion of steam in a turbine.

[D].

all (a), (b) & (c).

Answer: Option A

Explanation:

No answer description available for this question.

Question: Filling of gas from a high pressure cylinder into small bottles is an example of a/an __________ process.
[A].

equilibrium

[B].

adiabatic

[C].

steady

[D].

unsteady

Answer: Option D

Explanation:

No answer description available for this question.