Chemical Engineering Thermodynamics

Question: In an irreversible process
[A].

Tds = dE – dW = 0

[B].

dE – dW – Tds = 0

[C].

Tds – dE + dW< 0

[D].

Tds – dT + dW< 0

Answer: Option C

Explanation:

No answer description available for this question.

Question: In a reversible process
[A].

Tds = dE + dW

[B].

dE – dW = Tds

[C].

dW – dE = Tds

[D].

Tds – dW + dE >0

Answer: Option A

Explanation:

No answer description available for this question.

Question: For a constant volume process
[A].

dE = CpdT

[B].

dE = CvdT

[C].

dQ = dE + pdV

[D].

dW = pdV

Answer: Option B

Explanation:

No answer description available for this question.

Question: For equilibrium process (i.e. reversible) in an isolated system
[A].

ds = 0

[B].

ds < 0

[C].

ds > 0

[D].

ds = Constant

Answer: Option A

Explanation:

No answer description available for this question.

Question: For spontaneous changes in an isolated system (S = entropy)
[A].

ds = 0

[B].

ds <0

[C].

ds > 0

[D].

ds = Constant

Answer: Option C

Explanation:

No answer description available for this question.

Question: Entropy is a measure of the __________ of a system.
[A].

disorder

[B].

orderly behaviour

[C].

temperature changes only

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Absolute zero temperature signifies the
[A].

minimum temperature attainable.

[B].

temperature of the heat reservoir to which a Carnot engine rejects all the heat that is taken in.

[C].

temperature of the heat reservoir to which a Carnot engine rejects no heat.

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.

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

= Constant

[B].

[C].

[D].

= Constant

Answer: Option A

Explanation:

No answer description available for this question.

Question: Near their critical temperatures, all gases occupy volumes __________ that of the ideal gas.
[A].

less than

[B].

same as

[C].

more than

[D].

half

Answer: Option A

Explanation:

No answer description available for this question.

Question: Mollier diagram is a plot of
[A].

temperature vs. enthalpy

[B].

temperature vs. enthalpy

[C].

entropy vs. enthalpy

[D].

temperature vs. internal energy

Answer: Option C

Explanation:

No answer description available for this question.