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NEET Sample Paper NEET Sample Test Paper-30

  • question_answer
    A gas 'X' is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The saturated aqueous solution also dissolves magnesium ribbon with evolution of a colourless gas Y. Identify 'X' and Y.

    A)  \[X=C{{O}_{2}}\text{,}Y=C{{l}_{2}}\]

    B)  \[X=C{{l}_{2}}\text{,}Y=C{{O}_{2}}\]

    C) \[X=C{{l}_{2}},Y={{H}_{2}}\]   

    D)  \[X={{H}_{2}},Y=C{{l}_{2}}\]

    Correct Answer: C

    Solution :

    \[\underset{(X)}{\mathop{C{{l}_{2}}}}\,+{{H}_{2}}O\xrightarrow{{}}HCl+HOCl\] \[HCl+AgN{{O}_{3}}\xrightarrow{{}}\underset{white}{\mathop{AgCl}}\,\downarrow +HN{{O}_{3}}\] \[2HCl+Mg\xrightarrow{{}}MgC{{l}_{2}}+{{H}_{2(g)}}\uparrow \]


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