The throttling process is __________ process.

Joule-Thomson effect i.e., a throttling process is a constant __________ process.

A

Entropy

B

Temperature

C

Internal energy

D

Enthalpy

Throttling (Joule-Thomson effect) process is a constant __________ process.

A

Enthalpy

B

Entropy

C

Pressure

D

None of these

Throttling process is a/an __________ process.

A

Reversible and isothermal

B

Irreversible and constant enthalpy

C

Reversible and constant entropy

D

Reversible and constant enthalpy

All gases except __________ shows a cooling effect during throttling process at atmospheric temperature and pressure.

A

Oxygen

B

Nitrogen

C

Air

D

Hydrogen

The refrigerant after condensation process is cooled below the saturation temperature before throttling. Such a process is called

A

Sub-cooling or under-cooling

B

Super-cooling

C

Normal cooling

D

None of these

The temperature at which a gas, when subjected to Joule-Thomson expansion, neither cools or heats up, is termed as the __________ temperature. Above this temperature the gas heats up on throttling and below this the gas cools down.

A

Isotactic

B

Saturation

C

Inversion

D

Throttling

__________ decreases during adiabatic throttling of a perfect gas.

A

Entropy

B

Temperature

C

Enthalpy

D

Pressure

All gases above its inversion temperature, in a throttling process will show

A

A heating effect

B

No change in temperature

C

A cooling effect

D

Either A or C

During throttling process

A

Heat exchange does not take place

B

No work is done by expanding steam

C

There is no change of internal energy of steam

D

All of the above

In a throttling process

A

Steam temperature remains constant

B

Steam pressure remains constant

C

Steam enthalpy remains constant

D

Steam entropy remains constant

The throttling process is __________ process.

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