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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)

  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

  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

  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

  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

  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.

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

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

  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.

  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).

  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)