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In the following questions a statement o...

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question.
Assertion (A): Combustion of all organic compounds is an exothermic reaction.
Reason (R) : The enthalpies of all elements in their standard state are zero.

A

Both A and R are true and R is the correct explanation of A.

B

Both A and R are true but R is not the correct explanation of A.

C

A is true but R is false.

D

A is false but R is true.

Text Solution

Verified by Experts

The correct Answer is:
B
Both assertion and reason are true but reason is not the correct explanation of assertion.
Correct explanation : In a combustion reaction, sum of enthalpies of reactants is greater than the sum of the enthalpies of products.
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