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J & K CET Engineering J and K - CET Engineering Solved Paper-2005

  • question_answer
    Which of the following is not an endothermic reaction?

    A)  Dehydrogenation

    B)  Ethane to ethene

    C)  Combustion of propane

    D)  Change of chlorine molecule into chlorine atoms

    Correct Answer: C

    Solution :

     Combustion of propane is an exothermic reaction because the enthalpy of combustion (\[\text{ie,}\]\[\Delta \Eta \]) is always negative.


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