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Chemical Engineering - Environmental Engineering

Exercise : Environmental Engineering - Section 3
21.
Higher concentration of nitrogen dioxide in atmospheric air causes
cancer
bronchitis
asphyxiation
corrosion
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Ozone is
a primary pollutant.
a secondary pollutant.
impervious to ultra-violet rays.
both (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
The permissible color for domestic water supply is __________ ppm.
1
20
100
1000
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
High noise levels produced during operation of fans and compressors can be reduced by using
mufflers (silencers).
accoustical absorbent.
lagging of noisy duct.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
The Killer gas which caused Bhopal gas tragedy in 1984 was
phosgene
methyl iso-cynate (MIC)
carbon monoxide
sulphur dioxide
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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