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Environmental Engineering in CE

Environmental Engineering in CE
Which of the following industries discharge mercury as a pollutant?

Phosphoric acid plant
Chloro-alkali industry
Beverage plant
Tanneries

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Environmental Engineering in CE
Which of the following is the most widely used disinfectant in water treatment?

Coagulation
Cation exchanger
Irradiation of water by ultraviolet light
Chlorine

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Environmental Engineering in CE
The widest explosive limit is of __________ , thereby making it the most explosive gas.

Petrol vapor
Hydrogen
Acetylene
Carbon monoxide

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Environmental Engineering in CE
Iron & manganese present as pollutant in water can not be removed by

Ion exchange process
Oxidation followed by settling & filtration
Lime soda process or manganese zeolite process
Chlorination

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Environmental Engineering in CE
Siderosis is a disease caused by the inhalation of __________ dust.

Iron
Silica
Coal
None of these

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Environmental Engineering in CE
Carbonaceous particles having size less than 1 μm are called

Grit
Aggregates
Smoke
Aerosols

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MORE MCQ ON Environmental Engineering in CE

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