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Chemical Engineering :: Chemical Reaction Engineering

  1. Which of the following is not a theory of homogeneous reaction?

  2. A.

     Collision theory and activated complex theory

    B.

     Chain reaction theory

    C.

     Radiation hypothesis

    D.

     None of these


  3. Rate of an autocatalytic chemical reaction is a function of

  4. A.

     Temperature only

    B.

     Pressure only

    C.

     Composition only

    D.

     All of the above


  5. The role of a catalyst in a chemical reaction is to change the

  6. A.

     Equilibrium constant

    B.

     Activation energy

    C.

     Final products

    D.

     Heat of reaction


  7. Pick out the correct statement.

  8. A.

     A chemical reaction accompanied by absorption of heat is called an exothermic reaction

    B.

     A chemical reaction accompanied by evolution of heat is called an endother-mic reaction

    C.

     The rate constant for a first order reaction does not change on changing the concentration units

    D.

     Chemical equilibrium state is dynamic in nature


  9. A liquid decomposes by irreversible first order kinetics and the half life period of this reaction is 8 minutes. The time required for 75% conversion of the liquid will be __________ minutes.

  10. A.

     4

    B.

     8

    C.

     12

    D.

     16


  11. Design of heterogeous catalytic reactor involves consideration of __________ steps.

  12. A.

     Only chemical

    B.

     Only physical

    C.

     Both A & B

    D.

     Neither A nor B


  13. Reaction of benzene with chlorine gas to produce tri-chlorobenzene exemplifies a/an __________ reaction.

  14. A.

     Elementary

    B.

     Parallel

    C.

     Consecutive

    D.

     None of these


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

  16. A.

     Reaction kinetics for single particle,

    B.

     Size distribution of solids beingtreated

    C.

     Flow patterns of solids and fluid in the reactor

    D.

     All of the above


  17. Pick out the wrong statement.

  18. A.

     The integral method of analysing kinetic data is used when the data is scattered

    B.

     The differential method of analysing kinetic data requires more accurate or larger amounts of data

    C.

     When the reaction rate is independent of temperature, the reaction is said to be of zero order

    D.

     He ratio of volumes of plug flow reactor to that of mixed reactor is always less than one for identical feed composition, flow rate, conversion and for all positive reaction orders


  19. For the reversible reaction A ⇋ 2B, if the equilibrium constant K is 0.05 mole/litre; starting from initially 2 moles of A and zero moles of B, how many moles will be formed at equilibrium?

  20. A.

     0.253

    B.

     0.338

    C.

     0.152

    D.

     0.637