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Environmental Engineering in CE

Environmental Engineering in CE
Ozone level is generally found to be depleted in India in the month of

July
February
April
December

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Environmental Engineering in CE
Fluorosis is caused due to the presence of excessive amount of __________ in drinking water.

Fluoride
Arsenic
Mercury
Lead

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Environmental Engineering in CE
Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it.

Ortho-xylene
None of these
Coal ash
Potassium cyanide

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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

Shortness of breath
Tuberculosis
Asphyxiation (suffocation)
All of these

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Environmental Engineering in CE
Polyvinyl chloride containers are not suitable for storing

Metallic powder
Woolen clothes
Foodstuffs
None of these

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Environmental Engineering in CE
Green house gases blanket/block the infrared radiation from earth's surface to the atmosphere leading to its progressive warming up. Which of the following gases does not exhibit green house effect?

SO₃
CO₂
H₂
N₂

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