Related Questions

    2.

    A catalyst is most effective in finely divided state because

    A

    low surface area

    B

    greater number of active sites

    C

    It dissolves easily in water

    D

    It reduces the activation energy to the larger extent

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    3.

    In Zeigler-Natta polymerisation of ethylene, the active species is :

    A

    AlCl3{\rm{AlC}}{{\rm{l}}_3}

    B

    Et3Al{\rm{E}}{{\rm{t}}_3}{\rm{Al}}

    C

    CH2CH2{\rm{C}}{{\rm{H}}_2}{\rm{C}}{{\rm{H}}_2}

    D

    TiIII{\rm{T}}{{\rm{i}}^{{\rm{III}}}}

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    5.

    In chemical reaction, catalyst

    A

    Alters the amount of the products

    B

    Lowers the activation energy

    C

    Decreases the ΔH\Delta H of forward reaction

    D

    Increases the ΔH\Delta H of forward reaction

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    6.

    Which acts as negative catalyst?

    A

    Lead tetraethyl as antiknock compound

    B

    Glycerol in decomposition of H2O2{{\rm{H}}_2}{{\rm{O}}_2}

    C

    Ethanol in oxidation of chloroform

    D

    All of the above

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