7000+ Engineering Interview Questions and Answers Pdf - 2

Question: 6

As the chemical reaction proceeds, the rate of reaction

(A) May increase or decrease, depending on the type of reaction

(B) Remains same

(C) Increases

(D) Decreases

Question: 7

The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the

(A) Value of threshold energy decreases

(B) Collision frequency increases

(C) Fraction of molecules having threshold energy increases

(D) Increased temperature reduces the activation energy

Question: 8

The rate of reaction does not decrease appreciably as the reaction proceeds, in case of an _____ reaction.

(A) Autocatalytic

(B) Autothermal

(C) Endothermic

(D) Exothermic

Question: 9

Pick out the correct statement.

(A) A chemical reaction occurs when the energy of the reacting molecule is less than the activation energy of the reaction

(B) A photochemical reaction is catalysed by light

(C) Chemical equilibrium is a static state

(D) Reactions with high activation energies are very temperature sensitive

Question: 10

For a zero order reaction, concentration of product increases with the

(A) Increase in initial concentration

(B) Increase in total pressure

(C) Increase of reaction time

(D) Decrease in total pressure