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.

In the following questions a statement of Assertion (A) followed by a

1.	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.
Answer» Both A and R are TRUE and R is the correct EXPLANATION of A. Both A and R are true but R is not the correct explanation of A. A is true but R is FALSE. A is false but R is true. Solution :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.