Generally the detention period for grit chambers is kept as_______________?

Question: Exposure to small amount of __________ results in high blood pressure & heart disease in human beings.
[A].

hydrogen sulphide

[B].

mercury

[C].

cadmium

[D].

asbestos

Answer: Option C

Explanation:

No answer description available for this question.

Question: Most efficient and suitable dust removal equipment for removal of flyash from flue gas in a thermal power plant is the
[A].

gravity settling chamber

[B].

cyclone separator

[C].

electrostatic precipitator

[D].

bag filter

Answer: Option C

Explanation:

No answer description available for this question.

Question: The biological decomposition of organic substances in wastes controlled conditions is called
[A].

incineration

[B].

biological oxidation

[C].

composting

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.