J & K CET Engineering J and K - CET Engineering Solved Paper-2009

  • question_answer
    Which one of the following is always not negative?

    A)  Enthalpy of combustion

    B)  Enthalpy of formation

    C)  Enthalpy of neutralisation

    D)  Lattice enthalpy

    Correct Answer: B

    Solution :

     Enthalpy of formation is the heat evolved or absorbed when one mole of the substance is formed from its constituent elements under given conditions of temperature and pressure. Its value may be positive or negative.


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