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11th Class Physics Thermodynamical Processes Question Bank Critical Thinking

  • question_answer
    In endothermic reaction, the value of change in enthalpy \[(\Delta H)\] is [Pb. CET 2001]

    A)                 Positive               

    B)                 Negative

    C)                 Zero      

    D)                 None of these

    Correct Answer: A

    Solution :

               For endothermic reaction enthalpy of products \[({{H}_{P}})\]> enthalpy of reactant \[({{H}_{R}})\]                    Hence, change in enthalpy,                                 \[\Delta H={{H}_{P}}-{{H}_{R}}=\]Positive


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