Which of the following compounds is widely used for algae control ?

Question: COD of raw municipal sewage may be in the range of about __________ mg/litre.
[A].

1-2

[B].

5-10

[C].

90-120

[D].

1500-2500

Answer: Option C

Explanation:

No answer description available for this question.

Question: __________ is the process of killing organism in water.
[A].

Coagulation

[B].

Sterilisation

[C].

Disinfection

[D].

Sedimentation

Answer: Option C

Explanation:

No answer description available for this question.

Question: Most of the atmospheric air pollutants are present in large quantity in
[A].

stratosphere

[B].

thermosphere

[C].

trophosphere

[D].

mesosphere

Answer: Option C

Explanation:

No answer description available for this question.

Question: Dose of chlorine for disinfection of water is about __________ mg/litre of water.
[A].

0.01

[B].

0.1

[C].

0.3

[D].

1

Answer: Option D

Explanation:

No answer description available for this question.