Environmental Engineering in CE
The effect of increase in carbon dioxide level of the atmosphere and its profound effect on our climate is called the

Global warming
Both B and C
Catalytic conversion
Green house effect

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Environmental Engineering in CE
Higher concentration of CO₂ in atmosphere

Allows visible solar radiation (ultraviolet) of short wave-length to pass through
All of these
Prevents solar heat being radiated out completely, resulting in
Reflects and absorbs the longer wavelength (infra-red) radiations

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Environmental Engineering in CE
Coal mines drainage waste water (acidic in nature) results from the earth's water percolating through the voids created in coal bed during mining. This polluted water which either drains out naturally to water courses or are removed before starting the mining is

Neutralised by alkali treatment
None of these
Diluted with fresh water to reduce its acidity
Left as such without any treatment

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