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Chemical Engineering :: Chemical Reaction Engineering

  1. If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst

  2. A.

     Porosity is very important

    B.

     Porosity is of less importance

    C.

     Internal surface area is utilised efficiently

    D.

     None of these

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  3. Oil is hydrogenated using nickel catalyst in a __________ reactor.

  4. A.

     Batch

    B.

     Slurry

    C.

     Fluidised bed

    D.

     Fixed bed

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  5. Exposure of a photographic plate to produce a latent image is an example of __________ reaction.

  6. A.

     Very slow

    B.

     Very fast

    C.

     Photochemical

    D.

     Both B and C

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  7. An autothermal reactor is

  8. A.

     Most suitable for a second order reaction

    B.

     Most suitable for a reversible reaction

    C.

     Completely self-supporting in its thermal energy requirements

    D.

     Isothermal in nature

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  9. A reaction which is catalysed by an acid is also catalysed by any substance, which has a tendency to

  10. A.

     Lose a proton

    B.

     Gain a proton

    C.

     Lose an electron

    D.

     None of these

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  11. Thermodynamic equilibrium constant in a system is affected by

  12. A.

     Inerts

    B.

     Pressure

    C.

     Temperature

    D.

     All of the above

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  13. With increase in temperature, the rate constant obeying Arhenious equation

  14. A.

     Increases

    B.

     Decreases

    C.

     Decreases exponentially

    D.

     Can either increase or decrease ; depends on the frequency factor

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  15. A backmix reactor

  16. A.

     Is same as plug-flow reactor

    B.

     Is same as ideal stirred tank reactor

    C.

     Employs mixing in axial direction only

    D.

     Is most suitable for gas phase reaction

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  17. For reaction, P + 2 → 3R, molar rate of consumption of P is

  18. A.

     Double of that of Q

    B.

     Same as that of Q

    C.

     Half of that of Q

    D.

     2/3rd of that of Q

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  19. A catalyst

  20. 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

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