7000+ Metallurgical Kinetics and Energy MCQ Questions Answers - 2

Question: 6

When a catalyst increases the rate of reaction, the value of rate constant

(A) Decreases

(B) Increases

(C) Remains same

(D) Becomes infinite

Question: 7

Arrhenious equation shows the variation of ______ with temperature.

(A) Rate constant

(B) Reaction rate

(C) Frequency factor

(D) Energy of activation

Question: 8

The rate constant of a reaction depends on the

(A) Initial concentration of the reactants

(B) Extent of reaction

(C) Time of reaction

(D) Temperature of the system

Question: 9

If the rate of a chemical reaction becomes slower at a given temperature, then the

(A) Free energy of activation is higher

(B) Entropy changes

(C) Free energy of activation is lower

(D) Initial concentration of the reactants remains constant

Question: 10

Promotor is added to catalysts to improve its

(A) Surface area

(B) Fusion resistance

(C) Porosity

(D) Sensitivity