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Environmental Engineering in CE

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

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

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Environmental Engineering in CE
Polyvinyl chloride containers are not suitable for storing

Metallic powder
Woolen clothes
Foodstuffs
None of these

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Environmental Engineering in CE
The commonest form of iron & manganese found in ground water as pollutant is in the form of their

Bi-carbonates
Carbonates
Sulphides
Chlorides

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Environmental Engineering in CE
Ionisation potential employed in the industrial electrostatic precipitator is of the order of

230 V AC
230 V DC
30 to 70 kV DC
30 to 70 kV AC

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Environmental Engineering in CE
The principal gas evolved from sludge digestion tank is

CH₄
N₂
CO₂
CO

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

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

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