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Chemical Engineering :: Chemical Reaction Engineering

  1. Which of the following will give maximum gas conversion ?

  2. A.
    Fixed bed reactor.
    B.
    Fluidised bed reactor.
    C.
    Semi-fluidised bed reactor.
    D.
    Plug-flow catalytic reactor.

  3. __________ explains the mechanism of catalysis.

  4. A.
    Activated complex theory
    B.
    Collision theory
    C.
    Thermodynamics
    D.
    None of these

  5. From among the following, choose one which is not an exothermic process.

  6. A.
    Methanol synthesis
    B.
    Catalytic cracking
    C.
    Ammonia synthesis
    D.
    Oxidation of sulphur

  7. The fractional volume change of the system for the isothermal gas phase reaction, A 3B , between no conversion and complete conversion is

  8. A.
    0.5
    B.
    1
    C.
    2
    D.
    3

  9. A catalyst

  10. A.
    initiates a reaction.
    B.
    lowers the activation energy of reacting molecules.
    C.
    is capable of reacting with any one of the reactants.
    D.
    can not be recovered chemically unchanged at the end of a chemical reaction.

  11. What is the order of a chemical reaction, , if the rate of formation of 'C', increases by a factor of 2.82 on doubling the concentration of 'A' and increases by a factor of 9 on trebling the concentration of 'B'?

  12. A.
    7/2
    B.
    7/4
    C.
    5/2
    D.
    5/4

  13. For high conversion in a highly exothermic solid catalysed reaction, use a __________ bed reactor.

  14. A.
    fixed
    B.
    fluidised bed reactor followed by a fixed
    C.
    fixed bed reactor followed by a fluidised
    D.
    fluidised

  15. For every 10°C rise in temperature, the rate of chemical reaction doubles. When the temperature is increased from 30 to 70°C, the rate of reaction increases __________ times.

  16. A.
    8
    B.
    12
    C.
    16
    D.
    32

  17. The single parameter model proposed for describing non-ideal flow is the __________ model.

  18. A.
    tank in series
    B.
    dispersion
    C.
    both (a) & (b)
    D.
    neither (a) nor (b).

  19. A first order reaction requires two equal sized CSTR. The conversion is

  20. A.
    less when they are connected in series.
    B.
    more when they are connected in series.
    C.
    more when they are connected in parallel.
    D.
    same whether they are connected in series or in parallel.