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NEET Sample Paper NEET Sample Test Paper-83

  • question_answer
    Which of the following statement is true regarding heat of combustion of a substance?

    A)  It is always a positive quantity

    B)  It is always a negative quantity

    C)  It is equal to heat of formation

    D)  Nothing can be said with considering any chemical reaction

    Correct Answer: B

    Solution :

    Because heat is always required to lead combustion of any substance.


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