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Q. Which of the following pairs of gases is mainly responsible for green house effect ?

NEETNEET 2019Environmental Issues

Solution:

Relative contribution of various greenhouse gases to total global warming is
$\bullet \; CO_2 = 60 \%$
$\bullet \; CH_4 = 20 \%$
$\bullet \; CFC= 14 \%$
$\bullet \; N_2O = 6 \%$
$\Rightarrow \; $ Therefore $CO_2$ and $CH_4$ are the major greenhouse gases