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Environmental Engineering in CE

Environmental Engineering in CE
80% less than 200 mesh size particles are called

Powder
Grit
Smoke
Aggregates

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Environmental Engineering in CE
Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per million (ppm).

Extremely
Highly
Very extremely
Moderately

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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.

Anaerobic
Saphrophytic
Aerobic
Parasitic

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Environmental Engineering in CE
Presence of high concentration of ozone and smog in atmospheric air causes the

Damage of electrical insulator on high tension power line
Fading of dye on textiles
Embrittlement & decrease of folding resistance of paper
Cracking of rubber products

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Environmental Engineering in CE
Carbon monoxide is a pollutant, which causes

Respiratory disease (e.g. asthma)
Asphyxiation (suffocation) leading to death
Damage to building materials like marble
Retardation in crop growth

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Environmental Engineering in CE
Water effluent generated in printing industry is decolourised by

Adsorption
Electrolytic decomposition
Ion exchange technique
Reverse osmosis

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MORE MCQ ON Environmental Engineering in CE

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