CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozones.

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Question: CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozones.
[A].

102

[B].

105

[C].

109

[D].

1015

Answer: Option B

Explanation:

No answer description available for this question.

Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by

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Question: Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by
[A].

chemical coagulation

[B].

floatation & skimming

[C].

centrifugation

[D].

ultrafiltration

Answer: Option A

Explanation:

No answer description available for this question.

As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ μg/m3.(μg-microgram)

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Question: As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ μg/m3.(μg-microgram)
[A].

10

[B].

90

[C].

800

[D].

750

Answer: Option B

Explanation:

No answer description available for this question.

A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of __________ high above earth’s atmosphere, which absorbs it.

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Question: A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of __________ high above earth’s atmosphere, which absorbs it.
[A].

hydrogen

[B].

carbon dioxide

[C].

ozone

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.