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Environmental Engineering in CE

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

Smoke
Powder
Grit
Aggregates

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Environmental Engineering in CE
In water treatment plant, zeolite process is used to remove the __________ of water.

Alkalinity
Acidity
Iron & zinc
Hardness

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

Zinc
Iodine
Iron
Bromine

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Environmental Engineering in CE
Cleaning is done by(i) Scraping and removal in filters slow sand(ii) Back washing in slow sand filters(iii) Scraping and removal in filters rapid sand(iv) Back washing in rapid sand filtersThe correct answer is

(ii) and (iv)
(ii) and (iii)
(i) and (iv)
(i) and (ii)

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Environmental Engineering in CE
A 'body' which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the

Green house
Ionosphere
Global warming
Atmospheric effect

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Environmental Engineering in CE
Inorganic impurities causing water pollution is

Fats
Salts of metals
Carbohydrates
Protein

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