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

  • question_answer
    A silver coin weighing 11.34 g was dissolved in nitric acid. When sodium chloride was added to the solution all the silver (present as \[AgN{{O}_{3}}\]) was precipitated as silver chloride. The weight of the precipitated silver chloride was 14.35 g. Calculate the percentage of silver in the coin - 

    A) 4.8%

    B) 95.2%

    C) 90%     

    D) 80%

    Correct Answer: B

    Solution :

    [b] \[\underset{108}{\mathop{Ag}}\,+2HN{{O}_{3}}\to AgN{{O}_{3}}+N{{O}_{2}}+{{H}_{2}}O\] \[AgN{{O}_{3}}+NaCl\to AgCl+NaN{{O}_{3}}\]


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