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Chemical Reaction Engineering problems

  • 1. In case of physical adsorption, the heat of adsorption is of the order of __________ kcal/kg.mole.

  • Options
  • A. 100
  • B. 1000
  • C. 10000
  • D. 100000
    • Discuss
  • 2. The single parameter model proposed for describing non-ideal flow is the __________ model.

  • Options
  • A. tank in series
  • B. dispersion
  • C. both (a) & (b)
  • D. neither (a) nor (b).
    • Discuss
  • 3. From among the following, choose one which is not an exothermic process.

  • Options
  • A. Methanol synthesis
  • B. Catalytic cracking
  • C. Ammonia synthesis
  • D. Oxidation of sulphur
    • Discuss
  • 4. 'N' plug flow reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for __________ order reactions.

  • Options
  • A. first
  • B. second
  • C. third
  • D. any
    • Discuss
  • 5. In a consecutive reaction system Chemical Engineering Chemical Reaction Engineering: In a consecutive reaction system when E1 is much greater than E2, the yield of B increases with the

  • Options
  • A. increase of temperature.
  • B. decrease of temperature.
  • C. increase in initial concentration of A.
  • D. decrease in initial concentration of A.
    • Discuss
  • 6. The rate constant of a chemical reaction decreases by decreasing the

  • Options
  • A. pressure
  • B. concentration of reactants
  • C. temperature
  • D. duration of reaction
    • Discuss
  • 7. For a heterogeneous catalytic reaction

  • Options
  • A. free energy of activation is lowered in the presence of catalyst, which remains unchanged at the end of reaction.
  • B. a relatively small amount of catalyst can cause the conversion of large amount of reactants which does not mean that catalyst concentration is important.
  • C. the catalyst does not form an intermediate complex with the reactant.
  • D. the surface of the catalyst does not play an important role during reaction.
    • Discuss
  • 8. __________ explains the mechanism of catalysis.

  • Options
  • A. Activated complex theory
  • B. Collision theory
  • C. Thermodynamics
  • D. None of these
    • Discuss
  • 9. What is the order of a chemical reaction, Chemical Engineering Chemical Reaction Engineering: What is the order of a chemical reaction,, if the rate of formation of 'C', increases by a factor of 2.82 on doubling the concentration of 'A' and increases by a factor of 9 on trebling the concentration of 'B'?

  • Options
  • A. 7/2
  • B. 7/4
  • C. 5/2
  • D. 5/4
    • Discuss
  • 10. Pick out the correct statement.

  • Options
  • A. In catalytic reactions, the catalyst reacts with the reactants.
  • B. A catalyst initiates a chemical reaction.
  • C. A catalyst lowers the activation energy of the reacting molecules.
  • D. A catalyst can not be recovered chemi cally unchanged at the end of the chemical reaction.
    • Discuss

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