Related Questions

    1.

    If two elements A and B combine in different ratios to form two compounds, AxByA_xB_y and ApBqA_pB_q, then according to the Law of Multiple Proportions:

    A

    The ratio of masses of B which combine with a fixed mass of A is a simple whole number ratio.

    B

    The ratio of masses of A which combine with a fixed mass of B is a simple whole number ratio.

    C

    The ratio of masses of A which combine with a fixed mass of A is a simple whole number ratio.

    D

    The ratio of masses of B which combine with a fixed mass of B is a simple whole number ratio.

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    5.

    Which of the following is not a disproportion atom reaction

    A

    Cl2+OHβˆ’oClβˆ’+ClOβˆ’3+H2OC{l_2} + O{H^ - } o C{l^ - } + Cl{O^ - }_3 + {H_2}O

    B

    P4+OHβˆ’+H2OoPH3+H2POβˆ’2{P_4} + O{H^ - } + {H_2}O o P{H_3} + {H_2}P{O^ - }_2

    C

    S8+OHβˆ’o4S2βˆ’+2 S2O32βˆ’+6H2O{S_8} + O{H^ - } o 4{S^2}^ - + 2\,{S_2}{O_3}^{2 - } + 6{H_2}O

    D

    F2+OHβˆ’oFβˆ’+OF2+H2O{F_2} + O{H^ - } o {F^ - } + O{F_2} + {H_2}O

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    7.

    In which of the following reactions does zinc metal undergo displacement?

    A

    ZnO(s)+H2SO4(aq)β†’ZnSO4(aq)+H2O(l)ZnO(s) + H2SO4(aq) β†’ ZnSO4(aq) + H2O(l)

    B

    Zn(s)+CuSO4(aq)β†’ZnSO4(aq)+Cu(s)Zn(s) + CuSO4(aq) β†’ ZnSO4(aq) + Cu(s)

    C

    2Zn(s)+O2(g)β†’2ZnO(s)2Zn(s) + O2(g) β†’ 2ZnO(s)

    D

    ZnCO3(s)β†’ZnO(s)+CO2(g)ZnCO3(s) β†’ ZnO(s) + CO2(g)

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