Assertion (A). Combustion of all organic compounds is an exothermic reaction. Reason (R). The enthalpies of all elements in their standard state are zeroA. Both A and R are true and R is the correct explanation of AB. Both A and R are true but R is not the correct explanation of AC. A is true but R is falseD. A is false but R is true

Assertion (A). Combustion of all organic compounds is an exothermic re

1.	Assertion (A). Combustion of all organic compounds is an exothermic reaction. Reason (R). The enthalpies of all elements in their standard state are zeroA. Both A and R are true and R is the correct explanation of AB. Both A and R are true but R is not the correct explanation of AC. A is true but R is falseD. A is false but R is true
Answer» Correct Answer - 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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