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Chemical Engineering

Chemical Reaction Engineering MCQs

Practice Chemical Reaction Engineering MCQs for competitive exams.

Chemical Reaction Engineering MCQs

Practice questions from this topic.

In a/an __________ reactor, there is exchange of heat with the surroundings with sizeable temperature variation.

  1. A. Adiabatic
  2. B. Isothermal
  3. C. Non-adiabatic
  4. D. None of these
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Integral method for analysing the kinetic data is used

  1. A. When the data are scattered
  2. B. For testing specific mechanisms with simple rate expressions
  3. C. Both A and B
  4. D. None of these
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Differential method for analysing the kinetic data is used

  1. A. For testing complicated mechanisms
  2. B. When the data are scattered
  3. C. When rate expressions are very simple
  4. D. None of these
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The units of frequency factor in Arhenious equation

  1. A. Are the same as those of the rate constant
  2. B. Depend on the order of the reaction
  3. C. Depend on temperature, pressure etc. of the reaction
  4. D. Are cycles per unit time
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In case of a/an __________ chemical reaction, conversion increases with the rise in temperature.

  1. A. Reversible exothermic
  2. B. Irreversible exothermic
  3. C. Irreversible endothermic
  4. D. Reversible endothermic
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The reactions with low activation energy are

  1. A. Always spantaneous
  2. B. Slow
  3. C. Fast
  4. D. Non-spontaneous
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The conversion X A and residence time data are collected for zero order liquid phase reaction in a stirred tank reactor. Which of the following will be a straight line?

  1. A. X A Vs τ
  2. B. X A Vs ln τ
  3. C. fracX _A 1 - X _A Vs τ
  4. D. X A (1 - X A ) Vs τ
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The 'E' curve for a non-ideal reactor defines the fraction of fluid having age between t and t + dt

  1. A. At the inlet
  2. B. At the outlet
  3. C. In the reactor
  4. D. Averaged over the inlet and outlet
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Which of the following fixes the volume of a batch reactor for a particular conversion and production rate?

  1. A. Operating conditions (e.g. pressure and temperature)
  2. B. Rate constant
  3. C. Density of mixture
  4. D. None of these
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The rate of the chemical reaction A → B doubles as the concentration of A i.e., C A is doubled. If rate of reaction is proportional to C A n , then what is the value of n for this reaction?

  1. A. 0.5
  2. B. 1
  3. C. 0
  4. D. 2
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For high conversion in a highly exothermic solid catalysed reaction, use a __________ bed reactor.

  1. A. Fixed
  2. B. Fluidised bed reactor followed by a fixed
  3. C. Fixed bed reactor followed by a fluidised
  4. D. Fluidised
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Sometimes, batch process is preferred over continuous process, when the product

  1. A. Quality & yield can not be achieved in continuous processes, because of long residence time
  2. B. Sales demand is fluctuating
  3. C. Both A & B
  4. D. Neither A nor B
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