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Environmental Engineering in CE

Environmental Engineering in CE
Soluble silica present in boiler feed water can be removed by

Preheating it
Filtration
Coagulation
Anion exchanger

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Environmental Engineering in CE
Photochemical smog is formed from automobile exhaust

Is harmful for crops and trees also besides causing eye irritation & asthma
All of these
By reaction of hydrocarbon & nitric oxide in presence of sunlight
Appears only on sunny days

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Environmental Engineering in CE
White smoke coming out of the chimney of a furnace indicates the use of

Very high excess air
Gaseous fuel in the furnace
Low excess air
Liquid fuel in the furnace

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Environmental Engineering in CE
Fresh sewage is __________ in nature.

Acidic
Neutral
Highly acidic
Alkaline

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Environmental Engineering in CE
Removal of __________ results from the disinfection of water.

Hardness
Bacteria
Odour
Turbidity

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Environmental Engineering in CE
TLV of aldrin in public water supply system is about __________ μg/litre.

17
0.5
1097
357

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MORE MCQ ON Environmental Engineering in CE

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