Related Questions

    2.

    Which of the following has greatest no. of atoms

    A

    1g of butane (C4H10)({C_4}{H_{10}})

    B

    1g of Nitrogen (N2)\left( {{N_2}} \right)

    C

    1g of Silver (Ag)\left( {Ag} \right)

    D

    1g of Water (H2O)\left( {{H_2}O} \right)

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    3.

    Which of the following samples contain the least number of atoms

    A

    1g  of CO2(g)1g\,\,of\,C{O_2}\left( g \right)

    B

    1g of C8H18(l)1g\,of\,{C_8}{H_{18}}\left( l \right)

    C

    1g of C2H6(g)1g\,of\,{C_2}{H_6}\left( g \right)

    D

    1g of LiF(s)1g\,of\,LiF\left( s \right)

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    4.

    The total number of electrons in 18 ml of water (density = 1/gml

    A

    6.023  imes  10256.023\,\, imes \,\,{10^{^{25}}}

    B

    6.023  imes  10246.023\,\, imes \,\,{10^{^{24}}}

    C

    6.023  imes 18  imes  10236.023\,\, imes \,18\,\, imes \,\,{10^{^{23}}}

    D

    6.023  imes  10236.023\,\, imes \,\,{10^{^{23}}}

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    9.

    How many water molecules are present in 36 grams of water?

    A

    6.022imes10236.022 imes 10^{23}

    B

    1.2044imes10241.2044 imes 10^{24}

    C

    3.011imes10233.011 imes 10^{23}

    D

    1.8066imes10241.8066 imes 10^{24}

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    10.

    Which of the following pair of gases contain the same number of molecules?

    A

    16gO2,14gN216{\rm{g}}{{\rm{O}}_2},14{\rm{g}}{{\rm{N}}_2}

    B

    8gO2,22gN28{\rm{g}}{{\rm{O}}_2},22{\rm{g}}{{\rm{N}}_2}

    C

    28gN2,22gCO228{\rm{g}}{{\rm{N}}_2},22{\rm{g C}}{{\rm{O}}_2}

    D

    32gO2,32gN232{\rm{g}}{{\rm{O}}_2},32{\rm{g}}{{\rm{N}}_2}

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