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ENVIRONMENTAL ENGINEERING IN CE

Environmental Engineering in CE
80% less than 200 mesh size particles are called

Aggregates
Powder
Grit
Smoke

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

None of these
Suspended solids
Dissolved gases
Dissolved solids

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Environmental Engineering in CE
Most efficient and suitable dust removal equipment for removal of flyash from flue gas in a thermal power plant is the

Electrostatic precipitator
Gravity settling chamber
Cyclone separator
Bag filter

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Environmental Engineering in CE
Foaming and priming in boiler operation can be reduced by reduction in __________ in feed water.

Total solids
Turbidity
Color (Hazen)
All of these

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Environmental Engineering in CE
Presence of non-biodegradable substances, like alkyl benzene sulphonate (ABS) from the detergents in polluted water stream causes

Fire hazards
Depletion of dissolved oxygen
Persistent foam
Explosion hazards

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