Chemical Engineering

Question: A thermodynamic system is taken from state A to B along ACB and is brought back to A along BDA as shown below in the P-V diagram.The net work done during the complete cycle is given by the area covered by
[A].

P1ACBP2P1

[B].

ACBB1A1A

[C].

ACBDA

[D].

ADBB1A1A

Answer: Option C

Explanation:

No answer description available for this question.

Question: An ideal gas is taken around the cycle ABCA as shown in P-V diagram below :The work done by the gas during the cycle is equal to
[A].

12 P1V1

[B].

6 P1V1

[C].

3 P1V1

[D].

P1V1

Answer: Option C

Explanation:

No answer description available for this question.

Question: A large iceberg melts at the base, but not at the top, because of the reason that
[A].

ice at the base contains impurities which lowers its melting point.

[B].

due to the high pressure at the base, its melting point reduces.

[C].

the iceberg remains in a warmer condition at the base.

[D].

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

Answer: Option B

Explanation:

No answer description available for this question.

Question: If atmospheric temperature and dew point are nearly equal, then the relative humidity is
[A].

zero

[B].

50%

[C].

almost 100%

[D].

unpredictable

Answer: Option C

Explanation:

No answer description available for this question.

Question: Joule-Thomson experiment is
[A].

isobaric

[B].

adiabatic

[C].

isenthalpic

[D].

both(b) & (c)

Answer: Option D

Explanation:

No answer description available for this question.

Question: For an ideal gas, the chemical potential is given by
[A].

RT dlnP

[B].

R dlnP

[C].

R dlnf

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: For a real gas, the chemical potential is given by
[A].

RT dlnP

[B].

RT dlnf

[C].

R dlnf

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: At normal boiling point, molar entropy of vaporisation is __________ Joule/K°.mole.
[A].

72

[B].

92

[C].

142

[D].

192

Answer: Option B

Explanation:

No answer description available for this question.

Question: Entropy change for an irreversible isolated system is
[A].

∞

[B].

0

[C].

< 0

[D].

> 0

Answer: Option D

Explanation:

No answer description available for this question.

Question: is the mathematical expression for
[A].

specific heat at constant pressure (Cp).

[B].

specific heat at constant volume (Cv).

[C].

Joule-Thompson co-efficient.

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.