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Environmental Engineering in CE

Environmental Engineering in CE
Presence of __________ hardness is responsible for the temporary hardness in water.

Sulphate
Choride
Calcium
Carbonate

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Environmental Engineering in CE
Noise emitted by a ventilation fan at a distance of 3 metres is about __________ decibels.

105
125
85
145

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Environmental Engineering in CE
The maximum permissible noise level to which a man working in a chemical plant can be exposed for eight hours per day is about __________ decibels.

90
105
120
60

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Environmental Engineering in CE
Tri-sodium phosphate is used in boiler water treatment to reduce

Caustic embrittlement
Turbidity
Dissolved oxygen
Suspended silica

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Environmental Engineering in CE
Presence of bacteria in potable (drinking) water causes

Disease
Turbidity
Bad odour
Bad taste & colour

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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

Carbonates
Bi-carbonates
Chlorides
Sulphides

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MORE MCQ ON Environmental Engineering in CE

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