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JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Question Bank Self Evaluation Test - Some Basic Concepts of Chemistry

  • question_answer
    A mixture of \[N{{H}_{4}}NO{{  }_{3}}\] and \[{{(N{{H}_{4}})}_{2}}HP{{O}_{4}}\] contain 30.40% mass per cent of nitrogen. What is the mass ratio of the two components in the mixture?

    A) 2 : 1 

    B) 1 : 2 

    C) 3 : 4

    D) 4 : 1

    Correct Answer: A

    Solution :

    [a] Let w.t. of \[N{{H}_{4}}N{{O}_{3}}\] and \[{{\left( N{{H}_{4}} \right)}_{2}}HP{{O}_{4}}\] are x and y  gram respectively \[\frac{\frac{x}{80}\times 2\times 14+\frac{y}{132}\times 2\times 14}{x+y}\times 100=30.4\]\[\Rightarrow x:y=2:1\]


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