Ncert Exercises & Solutions

Select the correct option based on statements given below:

Assertion (A):	Combustion of all organic compounds is an exothermic reaction.
Reason (R):	The enthalpies of all elements in their standard state are zero.

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.