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  • Question

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


  • Options
  • 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.

  • Correct Answer
  • more when they are connected in series. 

    • Chemical Reaction Engineering problems

    Search Results

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

    • Options
    • A. Fixed bed reactor.
    • B. Fluidised bed reactor.
    • C. Semi-fluidised bed reactor.
    • D. Plug-flow catalytic reactor.
      • Discuss
    • 2. The operation of a rotameter is based on

    • Options
    • A. variable flow area.
    • B. rotation of a turbine.
    • C. pressure drop across a nozzle.
    • D. pressure at a stagnation point.
      • Discuss
    • 3. The maximum service temperature for fibre glass used as thermocouple wire insulation material is __________ °C.

    • Options
    • A. 250
    • B. 500
    • C. 750
    • D. 1000
      • Discuss
    • 4. Compositional analysis of __________ is done using mass spectrometer.

    • Options
    • A. an isotope
    • B. natural gas
    • C. a solid
    • D. an alloy
      • Discuss
    • 5. Nichol's chart deals with

    • Options
    • A. A.R. vs. phase lag of first order.
    • B. A.R. vs. phase lag of second order.
    • C. closed loop values vs. open loop values.
    • D. frequency response values of controllers.
      • Discuss
    • 6. The reaction between oxygen and organic material is a/an __________ reaction.

    • Options
    • A. exothermic
    • B. endothermic
    • C. biochemical
    • D. photochemical
      • Discuss
    • 7. 6 gm of carbon is burnt with an amount of air containing 18 gm oxygen. The product contains 16.5 gms CO2 and 2.8 gms CO besides other constituents. What is the degree of conversion on the basis of disappearance of limiting reactant?

    • Options
    • A. 100%
    • B. 95%
    • C. 75%
    • D. 20%
      • Discuss
    • 8. Pick out the correct statement

    • Options
    • A. Reactions with high activation energies are very temperature sensitive.
    • B. Chemical equilibrium is a static state.
    • C. A photochemical reaction is catalysed by light.
    • D. A chemical reaction occurs when the energy of the reacting molecule is less than the activation energy of the reaction.
      • Discuss
    • 9. Reaction rate equation for the reaction, . If S at is present in large excess, what is the order of this reaction?

    • Options
    • A. zero
    • B. one
    • C. two
    • D. three
      • Discuss
    • 10. For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the __________ adsorption.

    • Options
    • A. physical
    • B. chemical
    • C. both (a) and (b)
    • D. neither (a) nor (b)
      • Discuss

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