BITSAT 2013 Paper

Section: Chemistry

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Question : 60 of 150

Marks: +1, -0

The greenhouse effect is because of the

presence of gases, which in general are strong infrared absorbers, in the atmosphere.
presence of CO2 only in the atmosphere.
presence of O3 and CH4 in the atmosphere.
N2O and chlorofluorohydrocarbons in the atmosphere.

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