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Environmental Engineering in CE

Environmental Engineering in CE
Exposure to chemicals having carcinogenic properties cause

Dermatitis (skin disorder)
Cancer
Asthma
Asphyxiation (suffocation)

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

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

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Environmental Engineering in CE
TLV of NO₂ & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO₂ causes

Cancer
Skin disorder
Bronchitis
Bone disease

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Environmental Engineering in CE
Which of the following gases is having the widest explosion limit (about 2 to 81% gas in gas-air mixture), rendering it the property of the most explosive gas?

Carbon monoxide
Acetylene
Ammonia
Hydrogen

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Environmental Engineering in CE
The lowest layer of atmosphere is known as the

Troposphere
None of these
Stratosphere
Ionosphere

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Environmental Engineering in CE
The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant?

Chlorine
Benzene hexachloride
Alkalis
Alkyl benzene sulphonate (ABS)

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