1.

    Vapour pressure increases with increase in

    A

    Concentration of solution containing non-volatile solute

    B

    Temperature up to boiling point

    C

    Temperature up to triple point

    D

    Altitude of the concerned place of boiling

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    2.

    At ordinary temperature and pressure, among halogens, the chlorine is a gas, bromine is a liquid and iodine is a solid. This is because:

    A

    The specific heat is in the order Cl2>Br2>I2{\rm{C}}{{\rm{l}}_2} > {\rm{B}}{{\rm{r}}_2} > {{\rm{I}}_2}

    B

    Intermolecular forces among molecules of chlorine are the weakest and those in iodine are the strongest

    C

    The order of density is I2>Br2>Cl2{{\rm{I}}_2} > {\rm{B}}{{\rm{r}}_2} > C{{\rm{l}}_2}

    D

    The order of stability is Cl2>Br2>I2{\rm{C}}{{\rm{l}}_2} > {\rm{B}}{{\rm{r}}_2} > {{\rm{I}}_2}

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    7.

    One atmosphere is numerically equal to approximately:

    A

    106dynecm2{10^6}{\rm{dyne}}\,\,{\rm{c}}{{\rm{m}}^{ - 2}}

    B

    102dynecm2{10^2}{\rm{dyne}}\,\,{\rm{c}}{{\rm{m}}^{ - 2}}

    C

    104dynecm2{10^4}{\rm{dyne}}\,\,{\rm{c}}{{\rm{m}}^{ - 2}}

    D

    108dynecm2{10^8}{\rm{dyne}}\,\,{\rm{c}}{{\rm{m}}^{ - 2}}

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