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Environmental Engineering in CE

Environmental Engineering in CE
The biological decomposition of organic substances in wastes controlled conditions is called

Composting
Biological oxidation
Incineration
None of these

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Environmental Engineering in CE
Oceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the

Rain
Green house effect
Forestation
Vegetation

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

Carbonate
Choride
Calcium
Sulphate

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Environmental Engineering in CE
__________ is removed from water by lime-soda process.

Temporary hardness
Permanent hardness
Iron and manganese
Foul smell and taste

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Environmental Engineering in CE
Inorganic impurities causing water pollution is

Fats
Carbohydrates
Salts of metals
Protein

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Environmental Engineering in CE
Brown spots in fabrics will be caused by washing with water containing large amount of .

Iron
Iodine
Zinc
Bromine

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