CHEMICAL ENGINEERING

Question: Bad odour in sanitary latrines is reduced by periodically sprinkling
[A].

bleaching powder.

[B].

lime powder.

[C].

aluminium sulphate.

[D].

none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Question: New water wells are disinfected with chlorine in the form of
[A].

sodium chloride

[B].

sodium hypochlorate

[C].

bleaching powder

[D].

aluminium chloride

Answer: Option C

Explanation:

No answer description available for this question.

Question: Large diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint.
[A].

flanged iron

[B].

collar

[C].

flexible

[D].

expansion

Answer: Option B

Explanation:

No answer description available for this question.

Question: __________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently.
[A].

Collar

[B].

Flanged

[C].

Bell and Spigot

[D].

Expansion

Answer: Option B

Explanation:

No answer description available for this question.

Question: __________ pipe is the most suitable for carrying sanitary drainage.
[A].

stainless steel

[B].

Reinforced cement concrete

[C].

Cast iron

[D].

Asbestos cement

Answer: Option C

Explanation:

No answer description available for this question.

Question: Normal dosage of chlorine in public water supply scheme ranges from __________ ppm.
[A].

0.5 to 1

[B].

10 to 15

[C].

300 to 500

[D].

1000 to 1500

Answer: Option A

Explanation:

No answer description available for this question.

Question: A common disinfectant used in village wells for disinfection of water is
[A].

free chlorine

[B].

bromine

[C].

iodine

[D].

potassium permanganate

Answer: Option D

Explanation:

No answer description available for this question.

Question: If a heat transfer surface is pock-marked with a number of cavities, then as compared to a smooth surface the heat transfer by __________ will not increase.
[A].

convection

[B].

nucleate boiling

[C].

radiation

[D].

conduction

Answer: Option A

Explanation:

No answer description available for this question.

Question: “‘Dikes’ are low height walls made around the storage vessels meant for storing hazardous & inflammable material (e.g., petroleum products). Volume of dikes is equal to (where, V = volume of the storage vessel)
[A].

V

[B].

V/2

[C].

2V

[D].

3V

Answer: Option A

Explanation:

No answer description available for this question.

Question: Minimum safe distance between two liquid fuel storage tanks is equal to (where, H = height of the tank)
[A].

H

[B].

H/2

[C].

H/4

[D].

H/6

Answer: Option D

Explanation:

No answer description available for this question.