1.

    Platinized asbestos used as a catalyst in the manufacture of H2SO4{{\rm{H}}_2}{\rm{S}}{{\rm{O}}_4} is an example of :

    A

    Heterogeneous catalyst

    B

    Autocatalyst

    C

    Homocatalyst

    D

    Induced catalyst

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Catalysis
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :catalysis, heterogeneous catalysis, homogeneous catalysis, autocatalysis, induced catalysis

    Related Questions

    1.

    In a reversible reaction, a catalyst

    A

    Increases the rate of forward reaction only

    B

    Increases the rate of forward reaction and decreases that of backward reaction

    C

    Increases the rate of forward and backward reaction equally

    D

    Increases the rate of forward reaction to great extent than that of backward reaction

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Catalysis
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :catalyst, reversible reaction, reaction rate

    2.

    KClO3{\rm{KCl}}{{\rm{O}}_3} on heating decomposes into KCl and O2{{\rm{O}}_2}. If some MnO2{\rm{Mn}}{{\rm{O}}_2} is added the reaction goes much faster because :

    A

    MnO2{\rm{Mn}}{{\rm{O}}_2} decomposes to give oxygen

    B

    MnO2{\rm{Mn}}{{\rm{O}}_2} provides heat by reacting

    C

    Better contact is provided by MnO2{\rm{Mn}}{{\rm{O}}_2}

    D

    MnO2{\rm{Mn}}{{\rm{O}}_2} acts as a catalyst

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Catalysis
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Catalysis, Chemical Reactions, Decomposition

    3.

    Mutarotation of glucose is an example of :

    A

    Acid-base catalysis

    B

    Homogeneous catalysis

    C

    Both (1) and (2)

    D

    None of these

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Catalysis
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Mutarotation, Acid-base catalysis, Homogeneous catalysis

    4.

    In a reversible reaction, the catalyst

    A

    Increases the activation energy of the backward reaction

    B

    Increases the activation energy of the forward reaction

    C

    Decreases the activation energy of both forward and backward reaction

    D

    Decreases the activation energy of forward reaction

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Catalysis
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :catalysis, activation energy, reversible reaction

    5.

    A catalyst

    A

    Lowers the activation energy

    B

    Changes the rate constant

    C

    Changes the product

    D

    Itself destroys in the reaction

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Catalysis
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :catalyst, activation energy, rate constant, reaction mechanism

    6.

    During hydrogenation of oils, catalyst commonly used is :

    A

    Pd or CuCl2{\rm{CuC}}{{\rm{l}}_2}

    B

    Finely divided Ni

    C

    Fe

    D

    V2O5{{\rm{V}}_2}{{\rm{O}}_5}

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Catalysis
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Hydrogenation, Catalysis, Transition metals

    7.

    Which of the following is not a characteristic of physisorption of a gas on solid surface?

    A

    Reversible in nature

    B

    Uni-molecular layer formation

    C

    Involves van der waals forces

    D

    Low enthalpy of adsorption

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Catalysis
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Physisorption, Adsorption, Intermolecular Forces, Enthalpy

    8.

    Which one of the following statements is not correct?

    A

    Coenzymes increase the catalytic activity of enzyme

    B

    Catalyst does not initiate any reaction

    C

    The value of equilibrium constant is changed in the presence of a catalyst in the reaction at equilibrium

    D

    Enzymes catalyse mainly bio-chemical reactions

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Catalysis
    πŸŽ“ Ncert Level:Analyzing
    🎯Difficulty :Easy
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :enzymes, coenzymes, catalysis, equilibrium, reaction kinetics

    9.

    An inhibitor is essentially

    A

    An autocatalyst

    B

    A negative catalyst

    C

    A catalyst promoter

    D

    A homogenous catalyst

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Catalysis
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :catalysis, inhibitors

    10.

    A catalyst is a substance which :

    A

    Increases equilibrium constant of reaction

    B

    Changes the equilibrium conc.of reaction

    C

    Shortens the time to reach equilibrium

    D

    Supplies the energy of the reaction

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Catalysis
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Catalyst, Chemical Equilibrium

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