Chemical Engineering Thermodynamics

Question: Fugacity and pressure are numerically not equal for the gases
[A].

at low temperature and high pressure.

[B].

at standard state.

[C].

both (a) and (b).

[D].

in ideal state.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Activity co-efficient is a measure of the
[A].

departure from ideal solution behaviour.

[B].

departure of gas phase from idea] gas law.

[C].

vapour pressure of liquid.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: A liquid under pressure greater than its vapour pressure for the temperature involved is called a __________ liquid.
[A].

subcooled

[B].

saturated

[C].

non-solidifiable

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: In jet refrigerators, the refrigerating fluid is practically always
[A].

water

[B].

ammonia

[C].

freon

[D].

brine

Answer: Option A

Explanation:

No answer description available for this question.

Question: Enthalpy changes over a constant pressure path are always zero for __________ gas.
[A].

any

[B].

a perfect

[C].

an easily liquefiable

[D].

a real

Answer: Option B

Explanation:

No answer description available for this question.

Question: Joule-Thomson co-efficient for a perfect gas is
[A].

zero

[B].

positive

[C].

negative

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Entropy change for an irreversible process taking system and surrounding together is
[A].

0

[B].

> 0

[C].

< 0

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: For a cyclic process, a fixed ratio between heat and work
[A].

always exists

[B].

may exist

[C].

never exists

[D].

is difficult to predict

Answer: Option A

Explanation:

No answer description available for this question.

Question: A system is said to be isopiestic, if there is no __________ change.
[A].

temperature

[B].

pressure

[C].

volume

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: One ton of refrigeration is defined as the heat rate corresponding to melting of one ton of ice in one
[A].

hour

[B].

day

[C].

minute

[D].

second

Answer: Option B

Explanation:

No answer description available for this question.