Chemical Engineering

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

, when temperature is constant.

[B].

, when temperature & mass of the gas remain constant.

[C].

P ∝ V, at constant temperature & mass of the gas.

[D].

= constant, for any gas.

Answer: Option B

Explanation:

No answer description available for this question.

Question: As the time is passing, entropy of the universe
[A].

is increasing

[B].

is decreasing

[C].

remains constant

[D].

data insufficient, can’t be predicted

Answer: Option A

Explanation:

No answer description available for this question.

Question: For an isothermal reversible compression of an ideal gas
[A].

only ΔE = 0

[B].

only ΔH =0

[C].

ΔE = ΔH = 0

[D].

dQ = dE

Answer: Option C

Explanation:

No answer description available for this question.

Question: For an isothermal process, the internal energy of a gas
[A].

increases

[B].

decreases

[C].

remains unchanged

[D].

data insufficient, can’t be predicted

Answer: Option C

Explanation:

No answer description available for this question.

Question: Cv for an ideal gas
[A].

does not depend upon temperature.

[B].

is independent of pressure only.

[C].

is independent of volume only.

[D].

is independent of both pressure and volume.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Isentropic process means a constant __________ process.
[A].

enthalpy

[B].

pressure

[C].

entropy .

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: Isobaric process means a constant process.
[A].

temperature

[B].

pressure

[C].

volume

[D].

entropy

Answer: Option B

Explanation:

No answer description available for this question.

Question: Equation which relates pressure, volume and temperature of a gas is called the
[A].

equation of state

[B].

Gibbs Duhem equation

[C].

ideal gas equation

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Internal energy of an ideal gas
[A].

increases with increase in pressure.

[B].

decreases with increase in temperature.

[C].

is independent of temperature.

[D].

none of these.

Answer: Option D

Explanation:

No answer description available for this question.

Question: For a constant pressure reversible process, the enthalpy change (ΔH) of the system is
[A].

Cv.dT

[B].

Cp.dT

[C].

[D].

Answer: Option C

Explanation:

No answer description available for this question.