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Chemical Engineering :: Chemical Reaction Engineering

  1. The catalytic converter for conversion of SO2 to SO3 by contact process should have a feed with SO2 content between

  2. A.
    2-5%
    B.
    7-10%
    C.
    12-15%
    D.
    20-25%

  3. If the pore diffusion controls in a catalytic reaction, the apparent activation energy Ea is equal to

  4. A.
    the intrinsic activation energy E.
    B.
    (E + ED) where ED is activation due to diffusion.
    C.
    (E + ED)/2
    D.
    ED/2

  5. With increase in K2/K1 in case of a unimolecular type elementary reactions, the fractional yield of 'R' in mixed reactor (for a given conversion of 'A')

  6. A.
    decreases
    B.
    increases
    C.
    increases linearly
    D.
    remains same

  7. Collision theory gives the rate constant for bimolecular reaction as

  8. A.
    K α T.e-E/RT
    B.
    K α eE/RT
    C.
    K α e-E/RT
    D.
    none of these

  9. Find a mechanism that is consistent with the rate equation and reaction given below:
    2A + B A2B, ( - rA) = k.CA.CB

  10. A.
    A + B AB ; AB + A A2B
    B.
    A + B AB;AB + A A2B
    C.
    A + A AA;AA + B A2B
    D.
    A + A AA;AA + B A2B

  11. A gaseous reactant is introduced in a mixed reactor of 3 litres volume at the rate of 1 litre/second. The space time is __________ seconds.

  12. A.
    1
    B.
    3
    C.
    1/3
    D.
    32

  13. The temperature dependence of reaction rate constant (K) by Arhenius law is given by

  14. A.
    K α e-E/RT
    B.
    K α eE/RT
    C.
    K α T . e-E/RT
    D.
    K α T . e-E/RT

  15. For a __________ order chemical reaction, , the fractional conversion of reactant 'A' is proportional to time.

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

  17. Velocity of a chemical reaction

  18. A.
    decreases with increase in temperature.
    B.
    increases with increase of pressure of reactants for all reactions.
    C.
    decreases with increase of reactant concentration.
    D.
    none of these.

  19. Backmixing is most predominant in

  20. A.
    a well stirred batch reactor.
    B.
    a plug-flow reactor.
    C.
    a single CSTR.
    D.
    CSTR's connected in series.