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Chemical Engineering - Environmental Engineering

Exercise : Environmental Engineering - Section 2
31.
A shallow pond in which the sewage is retained and biologically treated is called
oxidation
Imhoff tank
lagoon
skimming tank
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
Which is the most practical and economical method for removal of suspended solid matter from polluted water ?
Sedimentation
Skimming off
Chlorination
Biological oxidation
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
Atmospheric pollution caused by the exhaust gas of supresonic transport air-crafts is mostly in the atmospheric region called
thermosphere
stratosphere
troposphere
mesosphere
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Iron & manganese present in the polluted water is removed by
simple filtration.
oxidation followed by settling & filtration.
chemical coagulation.
chlorination only.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Water effluent generated in printing industry is decolourised by
ion exchange technique.
reverse osmosis.
electrolytic decomposition.
adsorption.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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