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.
The unit of rate constant for a zero-order reaction is:
A.
s⁻¹
B.
L mol⁻¹ s⁻¹
C.
L² mol⁻² s⁻¹
D.
mol L⁻¹ s⁻¹
😑 View Answer Rough Work Error
ANSWER :
D. mol L⁻¹ s⁻¹
14.
The unit of rate constant for a first-order reaction is:
A.
mol L⁻¹ s⁻¹
B.
s⁻¹
C.
L mol⁻¹ s⁻¹
D.
L² mol⁻² s⁻¹
😑 View Answer Rough Work Error
ANSWER :
B. s⁻¹
15.
The unit of rate constant for a second-order reaction is:
A.
s⁻¹
B.
mol L⁻¹ s⁻¹
C.
L mol⁻¹ s⁻¹
D.
mol² L⁻² s⁻¹
😑 View Answer Rough Work Error
ANSWER :
C. L mol⁻¹ s⁻¹
16.
The rate constant of a reaction has the units L² mol⁻² s⁻¹. The order of the reaction is:
A.
Three
B.
Two
C.
Zero
D.
One
😑 View Answer Rough Work Error
ANSWER :
A. Three
17.
If the unit of rate constant is mol⁻¹ L s⁻¹, the order of the reaction is:
A.
One
B.
Three
C.
Two
D.
Zero
😑 View Answer Rough Work Error
ANSWER :
C. Two
18.
For a reaction A + B → Products, the rate law is r = k[A][B]. If the concentrations of both A and B are doubled, the rate of reaction will:
A.
Increase by a factor of 2
B.
Remain unchanged
C.
Increase by a factor of 8
D.
Increase by a factor of 4
😑 View Answer Rough Work Error
ANSWER :
D. Increase by a factor of 4