Chemical Engineering Archives | Page 350 of 357

Glyptal used in the manufacture of paints & lacquers is a __________ polymer.

July 24, 2022 by admin

Question: Glyptal used in the manufacture of paints & lacquers is a __________ polymer.
[A].

polyamide

[B].

polystyrene

[C].

polyester

[D].

polyacrylonitrile

Answer: Option C

Explanation:

No answer description available for this question.

The process of removal of scale formed during hot rolling of steel is termed as

July 24, 2022July 23, 2022 by admin

Question: The process of removal of scale formed during hot rolling of steel is termed as
[A].

descaling

[B].

shot blasting

[C].

pickling

[D].

skimming

Answer: Option C

Explanation:

No answer description available for this question.

The reactions with low activation energy are

July 24, 2022July 23, 2022 by admin

Question: The reactions with low activation energy are
[A].

always spantaneous

[B].

slow

[C].

fast

[D].

non-spontaneous

Answer: Option C

Explanation:

No answer description available for this question.

(NSh/NRe.NSc) is termed in mass transfer operation as the

July 24, 2022July 23, 2022 by admin

Question: (NSh/NRe.NSc) is termed in mass transfer operation as the
[A].

Stanton number

[B].

Peclet number

[C].

thermal diffusivity

[D].

momentum diffusivity

Answer: Option A

Explanation:

No answer description available for this question.

Liners of bags are usually made of

July 24, 2022July 23, 2022 by admin

Question: Liners of bags are usually made of
[A].

polythene

[B].

PVC

[C].

polypropylene

[D].

polyesters

Answer: Option C

Explanation:

No answer description available for this question.

Adhesives

July 24, 2022July 23, 2022 by admin

Question: Adhesives
[A].

can’t be used in the form of pressure sensitive tapes.

[B].

can’t join two dissimilar metals.

[C].

cure instantaneously after application on a surface.

[D].

none of these.

Answer: Option D

Explanation:

No answer description available for this question.

The reactions of high molecularity are rare, because

July 24, 2022July 23, 2022 by admin

Question: The reactions of high molecularity are rare, because
[A].

of very large activation energy of many bodies.

[B].

of low probability of many body collisions.

[C].

many body collisions are not favoured energetically.

[D].

of requirement of very large concentration for such reactions.

Answer: Option B

Explanation:

No answer description available for this question.

With the lowering of equiliDrium pressure, at a given temperature, the amount of ad-sorbate on the adsorbent

July 24, 2022July 23, 2022 by admin

Question: With the lowering of equiliDrium pressure, at a given temperature, the amount of ad-sorbate on the adsorbent
[A].

increases.

[B].

decreases.

[C].

remains same.

[D].

either (a) or (b), depends on the system.

Answer: Option B

Explanation:

No answer description available for this question.

Hot drink (e.g, tea) cups are usually made of

July 24, 2022July 23, 2022 by admin

Question: Hot drink (e.g, tea) cups are usually made of
[A].

polystyrene

[B].

polythene

[C].

polypropylene

[D].

PVC

Answer: Option A

Explanation:

No answer description available for this question.

Ester is formed, when an alcohol reacts with

July 24, 2022July 23, 2022 by admin

Question: Ester is formed, when an alcohol reacts with
[A].

carboxylic acid

[B].

aldehyde

[C].

ketone

[D].

ether

Answer: Option A

Explanation:

No answer description available for this question.