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


1.
What is the rate of a chemical reaction?
A.
Change in pressure over time
B.
Change in temperature over time
C.
Change in concentration over time
D.
Change in mass over time
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ANSWER :
C. Change in concentration over time
2.
Rate of reaction is measured as
A.
ΔP/Δt
B.
Δn/ΔV
C.
Δ[A]/Δt
D.
ΔT/Δt
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ANSWER :
C. Δ[A]/Δt
3.
Unit of rate of reaction is
A.
seconds
B.
liters
C.
seconds⁻¹
D.
mol L⁻¹ s⁻¹
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ANSWER :
D. mol L⁻¹ s⁻¹
4.
Which factor increases rate of reaction?
A.
Decrease in temperature
B.
Decrease in concentration
C.
Increase in catalyst
D.
Increase in activation energy
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ANSWER :
C. Increase in catalyst
5.
Rate of a reaction depends on:

NEET - 2015

A.
Activation energy only
B.
Collision frequency only
C.
Concentration of reactants only
D.
All of the above
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ANSWER :
D. All of the above
6.
Which factor does not affect the rate of a chemical reaction?

NEET - 2016

A.
Concentration of reactants
B.
Temperature of reaction
C.
Amount of catalyst added
D.
Equilibrium constant
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ANSWER :
D. Equilibrium constant