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Chemical Engineering :: Chemical Reaction Engineering

  1. Space velocity

  2. A.
    describes the extensive operating characteristics of a tubular flow reactor.
    B.
    is the maximum feed rate pre unit volume of reactor for a given conversion.
    C.
    is a measure of the ease of the reaction.
    D.
    all (a), (b) and (c)

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  3. A reaction which is catalysed by a base is catalysed by all substances which have a tendency to

  4. A.
    lose a proton
    B.
    gain a proton
    C.
    gain an electron
    D.
    none of these

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  5. For a homogeneous reaction of nth order, the dimension of the rate constant is given by

  6. A.
    l/(time)n
    B.
    (concentration)1 - n/(time)
    C.
    (concentration)n - 1/(time)
    D.
    none of these

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  7. The fractional volume change between no conversion and complete conversion, for the isothermal gas phase reaction, 2A R, is

  8. A.
    0.5
    B.
    -0.5
    C.
    1
    D.
    1.5

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  9. The reaction in which one of the products of reaction acts as a catalyst is called a/an __________ reaction.

  10. A.
    biochemical
    B.
    photochemical
    C.
    catalytic
    D.
    autocatalytic

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  11. A typical example of an exothermic reversible reaction conducted at high pressure in industry is

  12. A.
    dehydration of ethanol.
    B.
    methanol synthesis.
    C.
    reformation of methane.
    D.
    polymerisation of ethylene.

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  13. Study of chemical kinetics is the easiest in the case of __________ reactions.

  14. A.
    irreversible
    B.
    reversible
    C.
    surface
    D.
    side

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  15. In autocatalytic reactions,

  16. A.
    one of the reactants acts as a catalyst.
    B.
    one of the products acts as a catalyst.
    C.
    catalysts have very high selectivity.
    D.
    no catalyst is used.

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  17. Semibatch reactor is preferred, when a/an

  18. A.
    a highly exothermic reaction is to be controlled.
    B.
    undersirable side reaction (at high concentration of one of the reactants) is to be avoided.
    C.
    a gas is to be reacted with liquid (e.g. hydrogenation of fat).
    D.
    all (a), (b), and (c).

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  19. Exposure of a photographic plate to produce a latent image is an example of __________ reaction.

  20. A.
    very slow
    B.
    very fast
    C.
    photochemical
    D.
    both (b) and (c)

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