Which of the following chemical compounds can be used for dechlorination of water ?

Question: Direct reaction of unsaturated hydrocarbons with either NO or NO2 produces an eye irritating pollutant compound known as
[A].

photochemical smog.

[B].

peroxy acetyl nitrate (PAN) or methyl nitrile.

[C].

benzopyrene.

[D].

poly acrylonitrile

Answer: Option B

Explanation:

No answer description available for this question.

Question: Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal
[A].

by chemical coagulation.

[B].

in sedimentation tanks equipped with mechanical scrapper.

[C].

in vacuum filter.

[D].

in clarifiers.

Answer: Option B

Explanation:

No answer description available for this question.