Chemical Engineering Thermodynamics

Question: Duringthe phase transition, __________ changes.
[A].

pressure

[B].

volume

[C].

temperature

[D].

all (a), (b) and (c)

Answer: Option B

Explanation:

No answer description available for this question.

Question: In the equation, PVn = constant, if the value of n = 1, then it represents a reversible __________ process.
[A].

isothermal

[B].

isobaric

[C].

polytropic

[D].

adiabatic

Answer: Option A

Explanation:

No answer description available for this question.

Question: Entropy of an ideal gas depends upon its
[A].

pressure

[B].

temperature

[C].

both (a) & (b)

[D].

neither (a) nor (b)

Answer: Option C

Explanation:

No answer description available for this question.

Question: For an ideal gas, the internal energy depends upon its __________ only.
[A].

molecular size

[B].

temperature

[C].

volume

[D].

pressure

Answer: Option B

Explanation:

No answer description available for this question.

Question: Gibbs free energy of mixing at constant pressure and temperature is always
[A].

0

[B].

∞

[C].

+ ve

[D].

– ve

Answer: Option D

Explanation:

No answer description available for this question.

Question: For a stable phase at constant pressure and temperature, the fugacity of each component in a binary system __________ as its mole fraction increases.
[A].

decreases

[B].

increases

[C].

remains same

[D].

decreases linearly

Answer: Option B

Explanation:

No answer description available for this question.

Question: COP of a refrigerator drawing 1 kW of power per ton of refrigeration is about
[A].

0.5

[B].

3.5

[C].

4.5

[D].

8.5

Answer: Option B

Explanation:

No answer description available for this question.

Question: On opening the door of an operating refrigerator kept in a closed room, the temperature of the room will
[A].

increase

[B].

decrease

[C].

remain same

[D].

increase in summer and will decrease in winter

Answer: Option A

Explanation:

No answer description available for this question.

Question: A refrigerator works on the principle of __________ law of thermodynamics.
[A].

zeroth

[B].

first

[C].

second

[D].

third

Answer: Option C

Explanation:

No answer description available for this question.

Question: A refrigeration cycle is the same as a __________ cycle,
[A].

turbine

[B].

heat engine

[C].

reversed heat engine

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.