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Chemical Engineering - Environmental Engineering

Exercise : Environmental Engineering - Section 4
21.
Automobile exhaust is passed through two compartments catalytic converter employing platinum as catalyst for
conversion of CO into CO2 in the second compartment.
conversion of NOx into N2 and NH3 in the first compartment.
oxidation of unburnt hydrocarbon fuel in the second compartment.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Lagooning process is mainly a means of the
sludge disposal.
reduction of excessive flow in sewers.
biological treatment of wastes.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
Carbon monoxide is a pollutant, which causes
respiratory disease (e.g. asthma).
asphyxiation (suffocation) leading to death.
retardation in crop growth.
damage to building materials like marble.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
Pollution by particulate matter emission in the atmosphere does not take place during metal
grinding
machining
cutting
polishing
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Direct reaction of unsaturated hydrocarbons with either NO or NO2 produces an eye irritating pollutant compound known as
photochemical smog.
peroxy acetyl nitrate (PAN) or methyl nitrile.
benzopyrene.
poly acrylonitrile
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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