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Assertion (A). Combustion of all organic...

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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