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Environmental Engineering in CE

Environmental Engineering in CE
In water treatment plant, zeolite process is used to remove the __________ of water.

Iron & zinc
Acidity
Hardness
Alkalinity

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Environmental Engineering in CE
In water chemical treatment plant, use of chloramines ensures

Removal of permanent hardness
Weed control in reservoirs
Taste & odour control
Disinfection

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Environmental Engineering in CE
Particles having diameter greater than 75 μm (micrometer = 10-6 mm) are called

Grit
Smoke
Dust
Powder

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Environmental Engineering in CE
Deaeration of high pressure boiler feed water is done to reduce

Its dissolved oxygen content
Foaming from boilers
Caustic embrittlement
Its silica content

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Environmental Engineering in CE
Septic tank is a(i) Settling tank(ii) Digestion tank(iii) Aeration tank

Only (iii)
(i) and (iii)
(i) and (ii)
Only (i)

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Environmental Engineering in CE
Presence of volatile compounds like gasoline, oil, alcohol, ether etc. in municipal sewers may cause

Corrosion
Explosion
Non biodegradable foam
Undesirable plant growth

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