Explore topic-wise MCQs in Chemical Reaction Engineering.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Reaction Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

The minimum energy required by the reactants to effect the product formation is termed as _____

A. Threshold energy
B. Potential energy
C. Activation energy
D. Kinetic energy
Answer» B. Potential energy
Discussion
2.

Which of the following is incorrect about Transition state theory?

A. It is based on statistical mechanics
B. The formation of activated complex to be rapid
C. The decomposition of activated complex is slow
D. The formation of activated complex is the rate determining step
Answer» E.
Discussion
3.

If kB is Boltzmann constant and h is Plank s constant, the rate of decomposition of complex formed during product formation, as given by Transition state theory is ____

A. ( frac{k_B T}{h} )
B. ( frac{k_B h}{T} )
C. ( frac{k_B T}{2h} )
D. ( frac{k_B T^2}{h} )
Answer» B. ( frac{k_B h}{T} )
Discussion
4.

State true or false.
Transition state theory postulates that the reacting molecules form unstable intermediates, which are subsequently decomposed to products.

A. True
B. False
Answer» B. False
Discussion
5.

The temperature dependency of rate constant as given by Transition state theory is ____

A. k T
B. k T<sup>2</sup>
C. k T<sup>3</sup>
D. k T<sup>0.5</sup>
Answer» B. k T<sup>2</sup>
Discussion
6.

State true or false.
Transition state theory shows that there exists no equilibrium between activated complex and reacting molecules at all times.

A. True
B. False
Answer» C.
Discussion
7.

The temperature dependency of rate constant as given by Collision theory is ____

A. k T
B. k T<sup>2</sup>
C. k T<sup>3</sup>
D. k T<sup>0.5</sup>
Answer» E.
Discussion
8.

Collision theory states that ____

A. Molecules do not collide during the reaction
B. Reactant molecules collide to effect product formation
C. Reactants form complexes
D. Products formed are unstable
Answer» C. Reactants form complexes
Discussion
9.

For an endothermic reaction, the average energy of products is ____

A. Equal to the average energy of reactants
B. Lower than or equal to the average energy of reactants
C. Lower than the average energy of reactants
D. Greater than the average energy of reactants
Answer» E.
Discussion
10.

The equation representing the variation of rate constant with respect to temperature by Arrhenius equation is ____

A. ln( ( frac{k_2}{k_1} )) = ( frac{E}{R} ( frac{1}{T_2} frac{1}{T_1}) )
B. ln( ( frac{k_2}{k_1} )) = ( frac{E}{R} ( frac{1}{T_2} frac{1}{T_1}) )
C. ln( ( frac{k_2}{k_1} )) = ( frac{E}{R} ( frac{1}{T_1}- frac{1}{T_2}) )
D. ln( ( frac{k_2}{k_1} )) = ( frac{E}{R} ( frac{1}{T_2} + frac{1}{T_1}) )
Answer» B. ln( ( frac{k_2}{k_1} )) = ( frac{E}{R} ( frac{1}{T_2} frac{1}{T_1}) )
Discussion