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Environmental Engineering in CE

Environmental Engineering in CE
Pollution by particulate matter emission in the atmosphere does not take place during metal

Machining
Polishing
Cutting
Grinding

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Environmental Engineering in CE
Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of

Chlorine or its compounds
All of these
Ozone and iodine
Ultraviolet light for irradiation of water

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

125
105
145
85

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Environmental Engineering in CE
The type of bacteria which is active in trickling filter during biological treatment of sewage is the __________ bacteria.

Saphrophytic
Aerobic
Parasitic
Anaerobic

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Environmental Engineering in CE
Exposure to chemicals having carcinogenic properties cause

Asthma
Dermatitis (skin disorder)
Cancer
Asphyxiation (suffocation)

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Environmental Engineering in CE
The per capital consumption of a locality is affected by(i) Climatic conditions(ii) Quality of water(iii) Distribution pressure

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

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