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Environmental Engineering in CE

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

Green house effect
Vegetation
Rain
Forestation

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Environmental Engineering in CE
Inhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundaries causes

Asphyxiation (suffocation)
Shortness of breath
Tuberculosis
All of these

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Environmental Engineering in CE
Carcinogenic air pollutants cause

Anemia
Asphyxiation (suffocation)
Bone decay
Cancer

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Environmental Engineering in CE
Corrosion in boilers can be prevented by

Deaeration of feed water
Enhancing pH of feed water by adding alkali
All of these
Feeding sodium sulphite or hydrazine phosphate to the boilers, which combines with oxygen and prevents corrosion

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

CO₂
CO
N₂
CH₄

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Environmental Engineering in CE
TLV of aldrin in public water supply system is about __________ μg/litre.

1097
0.5
17
357

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MORE MCQ ON Environmental Engineering in CE

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