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NEET Sample Paper NEET Sample Test Paper-67

  • question_answer
    n gram of substance X reacts with m gram of   substance Y to form p gram of substance and q gram of substance S. This reaction can be represented as,\[\operatorname{X} + Y=R + S\]. The relation which can be established in the amounts of the  reactants and the products will be        

    A) \[n-m=p-q\]      

    B) \[n+m=p+q\]

    C) \[\operatorname{n} = m\]                      

    D) \[p = q\]

    Correct Answer: B

    Solution :

    \[\underset{ng}{\mathop{X}}\,\,\,+\underset{mg}{\mathop{Y}}\,\,\,\rightleftharpoons \,\,\underset{pg}{\mathop{R}}\,\,\,+\,\,\underset{qg}{\mathop{S}}\,\] \[\operatorname{n} + m =p + q\] by law of conservation of mass.


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