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Chemical Engineering :: Chemical Reaction Engineering

Chemical Reaction Engineering - Section 1
Chemical Reaction Engineering - Section 2
Chemical Reaction Engineering - Section 3
Chemical Reaction Engineering - Section 4
Chemical Reaction Engineering - Section 5
Chemical Reaction Engineering - Section 6
Chemical Reaction Engineering - Section 7
Chemical Reaction Engineering - Section 8
Chemical Reaction Engineering - Section 9
Chemical Reaction Engineering - Section 10
Chemical Reaction Engineering - Section-11

  1. The increase in the rate of reaction with temperature is due to

    2. A.
    increase in the number of effective collisions.
    B.
    decrease in activation energy.
    C.
    increase in the average kinetic energy of the reacting molecules.
    D.
    none of these.

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  2. A catalyst loses its activity due to

    3. A.
    loss in surface area of the active component.
    B.
    agglomeration of metal particles caused by thermal sintering of the solid surface.
    C.
    covering of the catalytic active sites by a foregin substance.
    D.
    all (a), (b) and (c).

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  3. 'N' plug flow reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for __________ order reactions.

    4. A.
    first
    B.
    second
    C.
    third
    D.
    any

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  4. Specific rate constant for a second order reaction

    5. A.
    is independent of temperature.
    B.
    varies with temperature.
    C.
    depends on the nature of the reactants.
    D.
    both (b) and (c).

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  5. For the irreversible elementary reactions in parallel viz , the rate of disappearance of 'X' is equal to

    6. A.
    CA(K1+K2)
    B.
    CA(K1 + K2)/2
    C.
    CA . K1/2
    D.
    CA . K2/2

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  6. For an isothermal variable volume batch reactor, the following relation is applicable for a first order irreversible reaction.

    7. A.
    XA = k . t
    B.
    C.
    -ln(1 - XA) = kt
    D.
    εA . ln (1 - XA) = k . t

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  7. For a zero order chemical reaction, the

    8. A.
    half life period is directly proportion to the initial concentration of the reac-tants.
    B.
    plot of products concentration with time is a straight line through the origin.
    C.
    products concentration increases linerarly with time.
    D.
    all (a), (b) and (c).

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  8. BET apparatus

    9. A.
    measures the catalyst surface area directly.
    B.
    operates at very high pressure.
    C.
    is made entirely of stainless steel.
    D.
    none of these.

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  9. Radioactive decay follows __________ order kinetics.

    10. A.
    first
    B.
    second
    C.
    third
    D.
    zero.

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  10. The excess energy of reactants in a chemical reaction required to dissociate into products is termed as the __________ energy.

    11. A.
    activation
    B.
    potential
    C.
    binding
    D.
    threshold

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