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


7.
Effect of catalyst on reaction rate is to
A.
Increase temperature
B.
Decrease temperature
C.
Increase activation energy
D.
Lower activation energy
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ANSWER :
D. Lower activation energy
8.
According to collision theory, molecules must collide with
A.
same velocity
B.
opposite spin
C.
sufficient energy and proper orientation
D.
high mass
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ANSWER :
C. sufficient energy and proper orientation
9.
The rate of reaction is doubled when the concentration of a reactant is doubled. The order of reaction with respect to that reactant is:

NEET - 2018

A.
Zero
B.
One
C.
Two
D.
Three
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ANSWER :
B. One
10.
The rate of reaction depends on
A.
all products
B.
all reactants
C.
one reactant only
D.
intermediates
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ANSWER :
B. all reactants
11.
Rate of reaction increases with
A.
increasing product concentration
B.
decreasing pressure
C.
increasing temperature
D.
decreasing catalyst
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ANSWER :
C. increasing temperature
12.
Which statement about a catalyst is correct?

NEET - 2023

A.
It initiates a reaction
B.
It increases activation energy
C.
It changes the equilibrium position
D.
It provides a new reaction path with lower activation energy
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ANSWER :
D. It provides a new reaction path with lower activation energy