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ENVIRONMENTAL ENGINEERING IN CE

Environmental Engineering in CE
Main pollutants released from iron & steel industry is

H₂S, NO & SO₃
CO, CO₂ & SO₂
SO₃, NO₂ & CO₂
CO₂, H₂S & NO₂

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Environmental Engineering in CE
The principal gas evolved from sludge digestion tank is

N₂
CH₄
CO₂
CO

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Environmental Engineering in CE
Pick out the wrong statement pertaining to 'green house' for the plants.

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Environmental Engineering in CE
Insufficient washing of sand grains in a rapid sand filter causes

Shrinkage of filtering media
Expansion of filtering media
Mud balls
Air binding

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

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

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