The treatment of water with bleaching powder is known as________________?

Question: Hazardous/polluting chemical industries should have an ‘exclusion zone’ with a green belt and general public access prohibited around it, covering a radius of ____ metres.
[A].

100

[B].

1000

[C].

400

[D].

4000

Answer: Option B

Explanation:

No answer description available for this question.

Question: H2S present in gaseous stream can be removed by adsorption on
[A].

silica gel

[B].

active carbon

[C].

bog iron

[D].

limestone powder

Answer: Option C

Explanation:

No answer description available for this question.

Question: Aerosols present in atmospheric air may be
[A].

positively charged.

[B].

negatively charged.

[C].

neutral.

[D].

combination of all (a), (b) & (c).

Answer: Option D

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: Atmospheric pollution caused by the exhaust gas of supresonic transport air-crafts is mostly in the atmospheric region called
[A].

thermosphere

[B].

stratosphere

[C].

troposphere

[D].

mesosphere

Answer: Option B

Explanation:

No answer description available for this question.