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JEE Main & Advanced Sample Paper JEE Main - Mock Test - 35

  • question_answer
    \[N{{a}_{2}}{{S}_{2}}{{O}_{3}}.5{{H}_{2}}O\] is used in photography to -

    A) Reduce \[AgBr\] to metallic Ag

    B) Remove reduced Ag

    C) Remove undecomposed \[AgBr\] as a soluble complex

    D) Convert metallic Ag to silver salt

    Correct Answer: C

    Solution :

    [c] \[AgBr+N{{a}_{2}}{{S}_{2}}{{O}_{3}}\to N{{a}_{3}}[Ag{{({{S}_{2}}{{O}_{3}})}_{2}}]\] Soluble complex


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