Question

Assertion(A) : For the combustion reactions, the value of `DeltaH` is always negative.
Reason(R ) : The combustion reactions are always endothermic.
A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion
C. If assertion is true but reason is false
D. If the assertion and reason both are false.

Answer 1

Correct Answer - C
Combustion reaction are always accompanied by the evolution of heat therefore, for such reactions the value of `DeltaH` is always negative.