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Environmental Engineering in CE

Environmental Engineering in CE
Fine grit present in sewage is removed in the __________ during sewage treatment.

Trickling filter
Grit chamber
Skimming tank
Detritus tank

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Environmental Engineering in CE
Ozone is

Impervious to ultra-violet rays
Both B & C
A primary pollutant
A secondary pollutant

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Environmental Engineering in CE
Carbonaceous particles having size less than 1 μm are called

Smoke
Grit
Aerosols
Aggregates

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Environmental Engineering in CE
Nitrogen oxides (NOx) is not produced in the __________ industry.

Nitric acid making
Nitrogenous fertiliser
Any of these
Detergent

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Environmental Engineering in CE
Removal of __________ is accomplished by aeration of water.

Dissolved gases
Suspended solids
Dissolved solids
None of these

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Environmental Engineering in CE
Which of the following is not a weightless pollutant?

Radioactive rays
SPM
Noise pollution
Thermal pollution

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