Ncert Exercises & Solutions

Given below are two statements:

Assertion (A):	Carbon dioxide is one of the important greenhouse gases.
Reason (R):	It is largely produced by the respiratory function of animals and plants.

1.	Both (A) and (R) are true and (R) is the correct explanation of (A).
2.	Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.	(A) is true but (R) is false.
4.	(A) is false but (R) is true.

Hint: Carbon dioxide is a cause of global warming

Carbon dioxide is one of the most important greenhouse gases. It is largely produced by the combustion of fossil fuels like

coal, natural gas, petroleum, etc. It is also produced by the respiratory function of animals and plants.

Thus, Both assertion and reason are true and the reason is not the correct explanation of assertion.