Increases
Decreases
Remains same
May increase or decrease depending on the type of reaction
✅ The correct answer is option B.
Chemical Reaction Engineering MCQs
Sometimes, batch process is preferred over continuous process, when the product
Quality & yield can not be achieved in continuous processes, because of long residence time
Sales demand is fluctuating
Both A & B
Neither A nor B
✅ The correct answer is option C.
For an isothermal second order aqueous phase reaction, A → B, the ratio of the time required for 90% conversion to the time required for 45% conversion is
2
4
11
22
✅ The correct answer is option C.
In a/an __________ reactor, there is exchange of heat with the surroundings with sizeable temperature variation.
Adiabatic
Isothermal
Non-adiabatic
None of these
✅ The correct answer is option C.
Which of the following is the optimum operating condition for an exothermic reversible reaction taking place in a plug-flow reactor?
Temperature should be high in the beginning and decreased towards the end of the reaction
Very low temperature should be used throughout the reaction
Very high temperature should be used throughout the reaction
None of these
✅ The correct answer is option A.
Reaction of benzene with chlorine gas to produce tri-chlorobenzene exemplifies a/an __________ reaction.
Elementary
Parallel
Consecutive
None of these
✅ The correct answer is option C.
The order of a chemical reaction is
An experimentally determined quantity
Always equal to the total stoichiometric number of reactants
Never fractional
None of these
✅ The correct answer is option A.
The temperature dependence of reaction rate constant (K) by Arhenius law is given by
K α e-E/RT
K α eE/RT
K α T . e-E/RT
K α √T . e-E/RT
✅ The correct answer is option A.
Knudsen diffusion is directly proportional to
T
√T
1/√T
T₂
✅ The correct answer is option B.