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Chemical Engineering - Environmental Engineering

Exercise : Environmental Engineering - Section 6
26.
The common pollutant generated in chlor-alkali industry and battery manufacture is
mercury
brine
phosphate
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
During sewage treatment, the sewage is subjected to __________ treatment in Imhoff tank.
filtration
digestion
sedimentation
both (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
Black smoke coming out of the chimney of a furnace is an indication of the use of __________ in the furnace.
low amount of excess combustion air
large quantity of excess combustion air
hydrocarbon fuel
pulverised coal as fuel
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
Pick out the wrong statement.
A slight haze at the top of chimney indicates good combustion in the furnace.
A bag filter incurs very small pressure drop and is very efficient for removal of sub-micronic dust particles from flue gases at very high temperature.
Electrostatic precipitator is the most efficient dust collection equipment for removal of sub-micronic dust particles present in flue gas.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
__________ content of the phosphate rock is the pollutant of primary interest in a phos-phatic fertiliser plant.
Calcium
Fluorine
Phosphorous
Sulphur
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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