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Chemical Engineering :: Chemical Reaction Engineering

  1. The knowledge of initial concentration and rate constant is necessary to determine the half life time of a reaction of __________ order.

  2. A.
    zero
    B.
    first
    C.
    second
    D.
    none of these

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  3. Which of the following factors control the design of a fluid-solid reactor ?

  4. A.
    Reaction kinetics for single particle,
    B.
    Size distribution of solids beingtreated.
    C.
    Flow patterns of solids and fluid in the reactor.
    D.
    All (a), (b) and (c).

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  5. A Catalyst

  6. A.
    increases the equilibrium concentration of the product.
    B.
    changes the equilibrium constant of the reaction.
    C.
    shortens the time to reach the equilibrium.
    D.
    none of these.

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  7. The reaction rate constants at two different temperature T1 and T2 are related by

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  9. The synthesis of proteins and metabolism in biological objects occur in the presence of biocatalyst called

  10. A.
    a ferment or an enzyme
    B.
    haemoglobin
    C.
    fungi
    D.
    none of these

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  11. Pick out the wrong statement.

  12. A.
    A particular chemical reaction is more temperature sensitive at low temperatures.
    B.
    A very high value of equilibrium constant, K (K >> 1) indicates that the reaction is practically irreversible in nature.
    C.
    The intercept of the Arrhenious plot is called the 'activation energy'.
    D.
    Non-ideal flow takes place in reactors due to recycling, channeling or by creation of stagnant regions.

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  13. Kinetics of a catalytic reaction can be best studied on a/an __________ reactor.

  14. A.
    mixed
    B.
    integral (plug flow)
    C.
    differential (flow)
    D.
    either (a), (b) and (c).

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  15. In case of a __________ reactor, the composition in the reactor and at the exit of the reactor is the same.

  16. A.
    semi-batch
    B.
    tubular
    C.
    batch
    D.
    back-mix

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  17. Exothermic reactions are best carried out in

  18. A.
    a CSTR.
    B.
    CSTR in series.
    C.
    a plug flow reactor followed by CSTR.
    D.
    CSTR followed by a plug flow reactor.

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  19. What is the order of chemical reaction , if itis found that the reaction rate doubles on doubling the concentration of B and also the reaction rate doubles when the concentrations of both A & B were doubled and quandrupled when the concentrations of both B & C were doubled ?

  20. A.
    1
    B.
    2
    C.
    3
    D.
    4

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