__________ columns are used for liquid dispersion in a continuous gas phase.

With increase in the liquid flow rate at a fixed gas velocity in a randomly packed counter current gas-liquid absorption column, the gas pressure drop

A

Decreases

B

Remains unchanged

C

Increases

D

Decreases exponentially

While dissolving a gas into a liquid at a constant temperature, the ratio of the concentration of the gas in the solution phase and in the gaseous phase is

A

Infinity

B

Unity

C

Constant

D

Negative

Dispersion of a gas through liquid is done by using a

A

Sparger

B

Kneader

C

Masticator

D

None of these

A gas mixture of three components is brought in contact with a dispersion of an organic phase in water. The degree of freedom of the system are

A

4

B

3

C

5

D

6

Diameter of bubble caps used in high pressure columns is __________ as compared to that used in identical vacuum columns.

A

Less

B

More

C

Same

D

Either A or B; no generalisation can be made

Which of the following equipments is used for liquid dispersion?

A

Packed column

B

Venturi scrubber

C

Bubble cap plate column

D

Wetted wall column

Which of the following equipments is not used for liquid dispersion?

A

Wetted wall towers

B

Packed towers

C

Venturi scrubbers

D

Agitated vessels

__________ column is preferred to be used, when a high liquid hold up is required in a reactor for gas-liquid reaction.

A

Packed

B

Bubble

C

Spray

D

Tray

Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a

A

Thermocouple

B

Reistance thermometer

C

Mercury in glass thermometer

D

Vapor pressure thermometer

Which of the following equipments is not used for gas dispersion?

A

Agitated vessels

B

Bubble cap tray towers

C

Perforated sieve tray towers

D

Spray towers

__________ columns are used for liquid dispersion in a continuous gas phase.

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