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Chemical Engineering - Environmental Engineering

Exercise : Environmental Engineering - Section 7
1.
Presence of non-biodegradable substances, like alkyl benzene sulphonate (ABS) from the detergents in polluted water stream causes
fire hazards.
explosion hazards.
persistent foam.
depletion of dissolved oxygen.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
Pick out the wrong statement.
The concentric layer in atmosphere which contains about 70% of the total mass of atmosphere and characterised by a steady decrease in temperature is called stratosphere.
Stratosphere is rich in ozone and is located just above the troposphere.
Troposphere is a turbulent dusty zone containing much of water vapor and clouds.
The earth's atmosphere is an envelope of gases extending upto a height of about 200 kms.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
Radioactive solid nuclear wastes are disposed off by
high temperature incineration.
pathological incineration.
pyrolysis.
underground burial in concrete containers.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
Growth of __________ is promoted by the presence of manganese in water.
files
algae
micro-organisms
mosquitoes
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
Average human body contains about __________ percent water by weight.
20
40
70
85
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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