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Chemical Engineering - Environmental Engineering

Exercise : Environmental Engineering - Section 2
41.
Foul odour and bad taste of water is removed by treating with
alum
bleaching powder
activated carbon
copper sulphate.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
Presence of __________ in water stream are deleterious to aquatic life.
soluble and toxic organics.
suspended solids.
heavy metals and cynides.
all (a), (b) & (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
Acute danger to human life (i.e. death) exists, if the concentration of CO2 in atmospheric air exceeds __________ percent (by volume).
1
3
7
20
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
Methyl iso-cynate (MIC) gas (TLV <1 ppm), which caused Bhopal gas tragedy in 1984 falls under the category of __________ toxic gas.
moderately
highly
extremely
very extremely
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
Noise level heard inside a bus in busy city traffic or inside a sub-way train corresponds to about __________ decibels.
75
95
120
140
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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