Rate of a Chemical Reaction and Factors Affecting the Rate of Reactions (Concentration, Temperature,... ) NEET Questions

Physical Chemistry - Chemical Kinetics

Rate of a Chemical Reaction and Factors Affecting the Rate of Reactions (Concentration, Temperature,... ) MCQ Questions


13.
What is an elementary reaction?
A.
A reaction with multiple steps
B.
A fast reaction
C.
A slow reaction
D.
A reaction that occurs in one step
😑 View Answer Rough Work Error
ANSWER :
D. A reaction that occurs in one step
14.
Complex reactions involve
A.
one step
B.
intermediates
C.
more than one reactant only
D.
explosions
😑 View Answer Rough Work Error
ANSWER :
B. intermediates
15.
Which of the following affects rate of gaseous reactions the most?
A.
Catalyst only
B.
Pressure only
C.
Concentration of liquids
D.
Pressure and temperature both
😑 View Answer Rough Work Error
ANSWER :
D. Pressure and temperature both
16.
A catalyst increases the rate of a reaction by:

NEET - 2019

A.
Decreasing the equilibrium constant
B.
Changing the products
C.
Lowering activation energy
D.
Increasing activation energy
😑 View Answer Rough Work Error
ANSWER :
C. Lowering activation energy
17.
Which of the following can increase the rate of a solid-gas reaction?
A.
Increasing surface area of solid
B.
Decreasing surface area of solid
C.
Decreasing temperature
D.
Adding inert gas
😑 View Answer Rough Work Error
ANSWER :
A. Increasing surface area of solid
18.
A catalyst changes which of the following?
A.
Gibbs energy
B.
Equilibrium constant
C.
Activation energy
D.
Enthalpy
😑 View Answer Rough Work Error
ANSWER :
C. Activation energy