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    7.

    Which one of the followings has maximum number of atoms ?

    A

    1  g{\rm{1}}\,\,{\rm{g}}of Ag (s){\rm{Ag}}\,\left( {\rm{s}} \right) [ Atomic mass of Ag=108Ag = {\rm{ }}108 ]

    B

    1  g{\rm{1}}\,\,{\rm{g}} of Mg (s){\rm{Mg}}\,\left( {\rm{s}} \right) [ Atomic mass of Mg=24Mg = {\rm{ }}24 ]

    C

    1  g{\rm{1}}\,\,{\rm{g}} of O2(g){{\rm{O}}_{\rm{2}}}\left( {\rm{g}} \right) [ Atomic mass of O=16O = {\rm{ 16}} ]

    D

    1  g{\rm{1}}\,\,{\rm{g}} of Li (s){\rm{Li}}\,\left( {\rm{s}} \right) [ Atomic mass of Li=7Li = {\rm{ 7}} ]

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    9.

    The number of atoms in 0.1 mole of a triatomic gas is:

    A

    6.022imes10226.022 imes 10^{22}

    B

    1.806imes10231.806 imes 10^{23}

    C

    6.022imes10236.022 imes 10^{23}

    D

    1.806imes10241.806 imes 10^{24}

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