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Chemical Engineering - Environmental Engineering

Exercise : Environmental Engineering - Section 1
41.
The commonest form of iron & manganese found in ground water as pollutant is in the form of their
carbonates
bi-carbonates
chlorides
sulphides
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
80% less than 200 mesh size particles are called
smoke
powder
grit
aggregates
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal
by chemical coagulation.
in sedimentation tanks equipped with mechanical scrapper.
in vacuum filter.
in clarifiers.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
Inhalation of lead compounds present in the automobile exhausts (using leaded petrol) causes
blood poisoning.
anaemia.
nervous system disorder.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
TLV of ozone (O3) and phosgene (COCl2) in air is __________ ppm.
0.1
25
100
1000
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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