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NEET AIPMT SOLVED PAPER 1999

  • question_answer
                In an endothermic reaction, the value of \[\Delta H\] is:                                                                   

    A)              zero        

    B)              positive  

    C)              negative 

    D)             constant

    Correct Answer: B

    Solution :

                    For endothermic, reactions standard heat of reaction \[(\Delta H)\] is positive because in these total energy of reactant is lower than product. i.e. \[{{E}_{R}}<{{E}_{P}}\]                   \[So,\Delta H={{E}_{P}}-{{E}_{R}}=+ve\]


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