CHEMICAL ENGINEERING | Chemical Engineering Thermodynamics

During Joule-Thomson expansion of gases

Byadmin August 10, 2022

Question: During Joule-Thomson expansion of gases
[A].

enthalpy remains constant.

[B].

entropy remains constant.

[C].

temperature remains constant.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Chemical Engineering Thermodynamics

A system is said to be at equilibrium, if the entropy of the system has reached __________ value.

Question: A system is said to be at equilibrium, if the entropy of the system has reached __________ value.
[A].

minimum
[B].
zero
[C].
maximum
[D].
none of these

Answer: Option C

Explanation:

No answer description available for this question.

Read More A system is said to be at equilibrium, if the entropy of the system has reached __________ value.
CHEMICAL ENGINEERING | Heat Transfer

For __________ Prandtl number values, the heat conduction will be negligible in the buffer zone.

Question: For __________ Prandtl number values, the heat conduction will be negligible in the buffer zone.
[A].

extremely low
[B].
low
[C].
high
[D].
no

Answer: Option C

Explanation:

No answer description available for this question.

Read More For __________ Prandtl number values, the heat conduction will be negligible in the buffer zone.
CHEMICAL ENGINEERING | Heat Transfer

Nucleate boiling is promoted

Question: Nucleate boiling is promoted
[A].

on polished surfaces
[B].
on rough surfaces
[C].
in the absence of agitation
[D].
none of these

Answer: Option B

Explanation:

No answer description available for this question.

Read More Nucleate boiling is promoted
CHEMICAL ENGINEERING | Chemical Engineering Thermodynamics

Joule-Thomson co-efficient which is defined as, , changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is

Question: Joule-Thomson co-efficient which is defined as, , changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is
[A].

0
[B].
∞
[C].
+ve
[D].
-ve

Answer: Option A

Explanation:

No answer description available for this question.

Read More Joule-Thomson co-efficient which is defined as, , changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is
CHEMICAL ENGINEERING | Fuels and Combustion

A coal having higher volatile matter content will necessarily have lower

Question: A coal having higher volatile matter content will necessarily have lower
[A].

ash fusion temperature.
[B].
calorific value.
[C].
ignition temperature.
[D].
caking index.

Answer: Option C

Explanation:

No answer description available for this question.

Read More A coal having higher volatile matter content will necessarily have lower
CHEMICAL ENGINEERING | Materials and Construction

Ceramic materials fabrication can not be done by

Question: Ceramic materials fabrication can not be done by
[A].

welding
[B].
slip casting
[C].
extrusion
[D].
plastic pressing

Answer: Option A

Explanation:

No answer description available for this question.

Read More Ceramic materials fabrication can not be done by

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