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Chemical Engineering - Environmental Engineering

Exercise : Environmental Engineering - Section 4
31.
Pick out the wrong statement.
Benzopyrene which causes cancer is present in traces in tobacco, charcoal & petrol driven automobile exhaust.
NO2 is capable of penetrating the troposphere and can absorb both ultraviolet & visible light.
Hydrocarbon pollutants are produced by sweet gum, oak & natural rubber trees.
H2S is not at all produced during combustion of sulphur bearing fuels as all the sulphur is oxidised to SO2.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
Which of the following is not an air pollutant ?
Ozone
Carcinogens
Pesticides
Metallic powders
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
Presence of high concentration of ozone and smog in atmospheric air causes the
embrittlement & decrease of folding resistance of paper.
cracking of rubber products.
fading of dye on textiles.
damage of electrical insulator on high tension power line.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Algae growth in water is controlled by
deoxidation
chlorination
bleaching
aeration
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
__________ is removed from water by lime-soda process.
Foul smell and taste
Iron and manganese
Temporary hardness
Permanent hardness
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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