191. The reaction in which the rate equation corresponds to a stoichiometric equation, is called a/an __________ reaction.
Elementary
Non-elementary
Parallel
Autokinetic
✅ The correct answer is option A.
Chemical Reaction Engineering MCQs
192. Which of the following is a controlling factor in very fast heterogeneous reaction?
Heat and mass transfer effects
Pressure
Temperature
Composition of reactant
✅ The correct answer is option A.
193. In which of the following gaseous phase reversible reactions, the product yield can not be increased by the application of high pressure?
N₂ + O₂ ⇋ 2NO
PCl3 + Cl₂ ⇋ PCl5
N + 3H₂ ⇋ 2NH₃
2SO₂ + O₂ ⇋ 2SO₃
✅ The correct answer is option A.
194. The rate of a chemical reaction is almost doubled for every 10°C rise in temperature. The rate will increase __________ times, if the temperature rises form 10 to 100°C.
256
512
112
612
✅ The correct answer is option B.
195. The single parameter model proposed for describing non-ideal flow is the __________ model.
Tank in series
Dispersion
Both A & B
Neither A nor B
✅ The correct answer is option C.
196. Design of heterogeous catalytic reactor involves consideration of __________ steps.
Only chemical
Only physical
Both A & B
Neither A nor B
✅ The correct answer is option C.
197. A second order reaction of the form A + B → C is called a pseudo-first order reaction, when
CA0 = CB0
CA0 > CB0
CB0 > CA0
CB0 ≥ CB0
✅ The correct answer is option D.
198. The reactions with low activation energy are
Always spantaneous
Slow
Fast
Non-spontaneous
✅ The correct answer is option C.
199. The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the
Increased temperature reduces the activation energy
Fraction of molecules having threshold energy increases
Collision frequency increases
Value of threshold energy decreases
✅ The correct answer is option B.
200. Integral method for analysing the kinetic data is used
When the data are scattered
For testing specific mechanisms with simple rate expressions
Both A and B
None of these
✅ The correct answer is option C.