Chemical Process

Question: __________ is produced using polycondensation reaction.
[A].

Polythene

[B].

Phenol formaldehyde

[C].

Poly vinyl chloride

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the
[A].

diamine and the ring.

[B].

dibasic acid and the ring.

[C].

diamine and the dibasic acid.

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Claude process of gas liquefaction employs
[A].

merely compression of gas beyond its critical pressure.

[B].

Joule-Thomson expansion cooling.

[C].

heat exchange with colder stream.

[D].

adiabatic expansion against a piston or in a turbine.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Linde process of gas liquefaction employs
[A].

exchange of heat with colder stream.

[B].

adiabatic expansion through a throttle valve (Joule-Thomson expansion).

[C].

adiabatic expansion against a piston or in a turbine.

[D].

merely compressing the gas beyond its critical pressure.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Hydrogenation of oil/fat does not
[A].

improve its resistance to rancid oxidation.

[B].

raise its melting point.

[C].

remove double bonds.

[D].

none of these.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Carboxymethyl cellulose (CMC) is added in detergents to act as a/an
[A].

surfactant

[B].

builder

[C].

optical brightening agent

[D].

anti soil redeposition agent

Answer: Option D

Explanation:

No answer description available for this question.

Question: __________ are added in lacquers to remove film brittleness and to improve adhereness.
[A].

Film forming materials

[B].

Plasticisers

[C].

Diluents

[D].

Solvents

Answer: Option B

Explanation:

No answer description available for this question.

Question: Calcination of limestone is not done in a __________ kiln for producing lime.
[A].

vertical shaft

[B].

rotary

[C].

fluidised bed

[D].

fixed bed

Answer: Option D

Explanation:

No answer description available for this question.

Question: Liquefaction of gases can not be done by
[A].

exchange of heat with colder stream.

[B].

adiabatic expansion through a throttle valve (Joule-Thomson expansion).

[C].

merely compressing it beyond critical pressure.

[D].

adiabatic expansion against a piston or in a turbine.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Average sulphur content in Indian pyrites is about __________ percent.
[A].

15

[B].

35

[C].

55

[D].

70

Answer: Option B

Explanation:

No answer description available for this question.