Home / Chemical Engineering / Chemical Reaction Engineering :: Section 9

Chemical Engineering :: Chemical Reaction Engineering

  1. If helium is introduced in a reactor containing O2, SO2 and SO3 at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO3 (as per Le Chatlier principle)

  2. A.
    decreases
    B.
    increases
    C.
    remains unaltered
    D.
    changes unpredictably.

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. Consider a reversible exothermic reaction in a plug flow reactor. The maximum and minimum permissible temperatures are Tmax and Tmin respectively. Which of the following temperature (T) profiles will require the shortest residence time to achieve the desired conversion.

  4. View Answer

    Workspace

    Discuss Discuss in Forum


  5. Fluidised bed reactor is characterised by

  6. A.
    uniformity of temperature.
    B.
    comparatively smaller equipment.
    C.
    very small pressure drop.
    D.
    absence of continuous catalyst regeneration facility.

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. In which of the following gaseous phase reversible reactions, the product yield can not be increased by the application of high pressure ?

  8. A.
    N2 + O2 2NO
    B.
    PCl3 + Cl2 PCl5
    C.
    N + 3H2 2NH3
    D.
    2SO2 + O2 2SO3

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. Space time equals the mean residence time

  10. A.
    when the density of the reaction mixture is constant.
    B.
    for large diameter tubular reactor.
    C.
    for narrow diameter tubular reactor.
    D.
    for CSTR.

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. 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.

  12. A.
    4
    B.
    8
    C.
    12
    D.
    16

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. Rate constant 'k' and absolute temperature 'T' are related by collision theory (for bimolecular) as

  14. A.
    kT1.5
    B.
    k ∝ exp(-E/RT)
    C.
    kT
    D.
    kT

    View Answer

    Workspace

    Discuss Discuss in Forum