JEE Main Chemistry question

Which of the following is correct about the heat of combustion?

(A)Heat of combustion may be exothermic in some cases and endothermic in other cases
(B)Heat of combustion is always exothermicCorrect
(C)Its value does not change with temperature
(D)All of the above

Answer: (B)

Solution

Combustion reactions are always exothermic (), so (b) is the correct statement. Option (a) is false because combustion is never endothermic, and option (c) is false because the enthalpy of combustion

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Question ID VK-135231