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    2.

    According to Charles’ law:

    A

    (V/T)P=K  {\left( {\partial V/\partial T} \right)_P} = K\;

    B

    (V/T)P=K  {\left( {\partial V/\partial T} \right)_P} = - K\;

    C

    (V/T)P=K/T  {\left( {\partial V/\partial T} \right)_P} = - K/T\;

    D

    None of these

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    3.

    Normal temperature and pressure (NTP){\rm{(NTP}}) of gases refers to:

    A

    273K273\,{\rm{K}} and 760{\rm{760}} mm Hg

    B

    273\,\,^\circ C\,\,and\,\,760\,\,mm\,Hg

    C

    273K273\,{\rm{K}} and 76{\rm{76}} mm Hg

    D

    273\,\,^\circ C\,\,and\,\,76\,\,\,mm\,\,Hg

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    5.

    Charles’ law is represented mathematically as

    A

    Vt=KV0t{V_t} = K{V_0}t

    B

    Vt=KV0t{V_t} = \frac{{K{V_0}}}{t}

    C

    Vt=V0(1+273t){V_t} = {V_0}\left( {1 + \frac{{273}}{t}} \right)

    D

    Vt=V0(1+t273){V_t} = {V_0}\left( {1 + \frac{t}{{273}}} \right)

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    6.

    Avogadro’s number is the number of molecules present at NTP in:

    A

    1mLofgas1{\rm{ }}\,mL{\rm{ }}\,\,of{\rm{ }}\,\,gas

    B

    1litreofgas1{\rm{ }}\,litre{\rm{ }}\,\,of{\rm{ }}\,gas

    C

    22.4litreofgas22.4{\rm{ }}\,litre{\rm{ }}\,\,of{\rm{ }}\,\,gas

    D

    22.4mLofgas22.4{\rm{ }}\,mL{\rm{ }}\,\,of{\rm{ }}\,\,gas

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    8.

    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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