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JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Question Bank Laws of chemical combination

  • question_answer
    n g of substance X reacts with m g of substance Y to form p g of substance R and q g of substance S. This reaction can be represented as,  \[X+Y=R+S\]. 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)                 \[n=m\] 

    D)                 \[p=q\]

    Correct Answer: B

    Solution :

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


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