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Chemical Engineering - Environmental Engineering

Exercise : Environmental Engineering - Section 5
16.
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.
100
1000
400
4000
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Maximum permissible residual chlorine in treated water should be __________ mg/litre.
0.001 to 0.01
02 to 0.3
2 to 3
5 to 10
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
Which of the following is the most active zone of atmosphere in which weathering events like rain, storm & lightning occur ?
Thermosphere
Troposphere
Stratosphere
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Which is the most widely used coagulant for the treatment of turbid water ?
Alum (aluminium sulphate)
Lime
Ferric chloride
Sodium aluminate
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
Which of the following is not a natural source of air pollution ?
Volcanic eruptions and lightening discharges.
Biological decay of vegetable matter.
Photochemical oxidation of organic matter.
None of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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