Plug flow
Dispersion
Mixed flow
Tank in series
✅ The correct answer is option B.
Chemical Reaction Engineering MCQs
Radioactive decay follows __________ order kinetics.
First
Second
Third
Zero
✅ The correct answer is option A.
A reaction which is catalysed by an acid is also catalysed by any substance, which has a tendency to
Lose a proton
Gain a proton
Lose an electron
None of these
✅ The correct answer is option A.
When a catalyst increases the rate of forward reaction, the value of rate constant
Increases
Decreases
Remain same
Becomes infinite
✅ The correct answer is option A.
A multiple reaction may be classified as a __________ reaction.
Consecutive or side
Parallel or side
Mixed
All of the above
✅ The correct answer is option D.
For series reaction, the relative yield
Is always greater for plug-flow reactor than for the single CSTR of the same volume
Statement in A is wrong
Decreases with increasing conversion
Both A and C hold good
✅ The correct answer is option D.
A rise in temperature
Normally tends to increase the reaction rate
Does not affect a catalysed reaction
Does not affect photo-chemical reaction rates
All of the above
✅ The correct answer is option D.
Photochemical reaction rate does not depend significantly on temperature, because
It is a reversible reaction
It is an exothermic reaction
The energy of reacting molecules exceeds the activation energy by absorption of light
None of these
✅ The correct answer is option C.
The rate of reaction of a/an __________ reaction is not affected by temperature rise.
Autocatalytic
Photochemical
Consecutive
Zero order
✅ The correct answer is option B.
In autocatalytic reactions,
One of the reactants acts as a catalyst
One of the products acts as a catalyst
Catalysts have very high selectivity
No catalyst is used
✅ The correct answer is option B.