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Environmental Engineering in CE

Environmental Engineering in CE
__________ is the process of killing organism in water.

Disinfection
Coagulation
Sedimentation
Sterilisation

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Environmental Engineering in CE
Inhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundaries causes

Shortness of breath
All of these
Asphyxiation (suffocation)
Tuberculosis

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Environmental Engineering in CE
The disinfection efficiency of chlorine increases by(i) Decreasing the time of contact(ii) Decreasing the temperature of water(iii) Increasing the temperature of water

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

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Environmental Engineering in CE
Inorganic impurities causing water pollution is

Fats
Protein
Carbohydrates
Salts of metals

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Environmental Engineering in CE
Noise level in a quiet private business office is about __________ decibels.

70
85
25
50

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Environmental Engineering in CE
Smog is not formed due to the presence of __________ in the atmosphere.

SO₂
CO₂
NOx
Any of these

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MORE MCQ ON Environmental Engineering in CE

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