JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Question Bank Chemical stoichiometry

  • question_answer
    \[12g\] of \[Mg\](at. mass 24) will react completely with acid to give                                               [MNR 1985]

    A)                 One mole of \[{{H}_{2}}\]

    B)                 1/2 mole of \[{{H}_{2}}\]

    C)                 2/3 mole of \[{{O}_{2}}\]

    D)                 Both 1/2 mol of \[{{H}_{2}}\] and 1/2 mol of \[{{O}_{2}}\]

    Correct Answer: B

    Solution :

               \[M{{g}^{+2}}\equiv {{H}_{2}}\]                                 \[n=\frac{12gm}{24gm}=\frac{1}{2}\]mole of \[{{H}_{2}}\]


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