When a dielectric material is subjected to alternating field, the absorption of energy by the material from the field is given by the imaginary part of polarizability.

As the atoms of rare gases become larger, electronic polarizability

A

Increases

B

Decreases

C

Remains the same

D

May increase or decrease

The length of a rectangular field F is 3 km greater than the side of a square field M , and the width of field F is 3 km less then the side of field M. If the area of field M is m2 square km, what is the area of field F?

A

m2 +6

B

6

C

m2 - 6

D

m2 +9

Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

A

1

B

> 1

C

≤ 1

In a gas-liquid absorption coloumn, for obtaining the maximum absorption efficiency

A

Liquid stream should be distributed uniformly

B

Gas stream should be distributed uniformly

C

Both gas as well as liquid streams should be distributed uniformly

D

By passing should be completely avoided

Absorption accompanied with chemical reaction is exemplified by the absorption of

A

Ammonia in water

B

Benzol present in coke oven gas by wash oil

C

SO₂ in alkaline solution

D

All of the above

In the absorption of ammonia in water, the main resistance to absorption is by the __________ phase.

A

Liquid

B

Gas

C

Both A & B

D

Neither A nor B

Absorption (liquid-gas system) with evolution of heat as compared to isothermal absorption results in

A

Decreased solute solubility

B

Large minimum liquid to gas (L/G) ratio

C

Large number of trays

D

All of the above

When a dielectric is placed in an electric field the field strength

A

decreases

B

increases

C

reduces to zero

D

remain unchanged

The dielectric constant is the ability of a material to establish an electric field.

A

True

B

False

A farmer has two rectangular fields. The larger field has twice the length and four times the width of the smaller field. If the smaller field has area K, then the area of the largest field is greater than the area of the smaller field by what amount?

A

4K

B

6K

C

7K

D

8K

When a dielectric material is subjected to alternating field, the absorption of energy by the material from the field is given by the imaginary part of polarizability.

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