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Chemical Engineering - Environmental Engineering

Exercise : Environmental Engineering - Section 6
46.
Removal of __________ results from the disinfection of water.
turbidity
odour
hardness
bacteria
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate ?
CO
SO2
NOx
CFC (chloro fluoro carbons)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
Carcinogenic air pollutants cause
bone decay
cancer
asphyxiation (suffocation)
anemia
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
Inhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundaries causes
asphyxiation (suffocation).
shortness of breath.
tuberculosis.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
Soluble silica present in boiler feed water can be removed by
coagulation
filtration
anion exchanger
preheating it
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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