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Environmental Engineering in CE

Environmental Engineering in CE
The Killer gas which caused Bhopal gas tragedy in 1984 was

Sulphur dioxide
Methyl iso-cynate (MIC)
Phosgene
Carbon monoxide

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Environmental Engineering in CE
Reingleman chart No. 2 corresponds to __________ percent black smoke.

20
10
80
40

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Environmental Engineering in CE
Tri-sodium phosphate is used in boiler water treatment to reduce

Dissolved oxygen
Turbidity
Caustic embrittlement
Suspended silica

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Environmental Engineering in CE
Presence of nitrogen in high concentration in contaminated air reduces partial pressure of oxygen in lungs, thereby causing asphyxia (suffocation) leading to death from oxygen deficiency. Concentration of N₂ in contaminated air at which it acts as a natural asphyxant is ≥ __________ percent.

88
84
92
80

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Environmental Engineering in CE
The maximum CO₂ is emitted into the atmosphere by

Urea
Biomass burning
Trees
Combustion

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Environmental Engineering in CE
Presence of excess flourine in water causes

Dental cavity
Respiratory disease
Fluorosis
Tooth decay

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MORE MCQ ON Environmental Engineering in CE

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