The Effect of Temperature on the Rate of Reactions NEET Questions

Physical Chemistry - Chemical Kinetics

The Effect of Temperature on the Rate of Reactions MCQ Questions


1.
What is the general effect of temperature on the rate of a chemical reaction?
A.
Decreases the rate
B.
No effect
C.
Increases the rate
D.
Stops the reaction
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ANSWER :
C. Increases the rate
2.
According to Arrhenius equation, rate constant increases with
A.
Increase in activation energy
B.
Decrease in temperature
C.
Decrease in activation energy
D.
Increase in activation energy
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ANSWER :
C. Decrease in activation energy
3.
An increase of 10°C approximately doubles the rate of reaction due to
A.
Increase in collision frequency
B.
Increase in pressure
C.
Increase in molecular size
D.
Decrease in energy barrier
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ANSWER :
A. Increase in collision frequency
4.
The Arrhenius equation is
A.
k = Ae^(-Ea/RT)
B.
k = Ae^(RT/Ea)
C.
k = Ae^(Ea/RT)
D.
k = Ae^(-RT/Ea)
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ANSWER :
A. k = Ae^(-Ea/RT)
5.
In Arrhenius equation, A is known as
A.
Rate constant
B.
Activation energy
C.
Thermodynamic constant
D.
Frequency factor
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ANSWER :
D. Frequency factor
6.
As temperature increases, the value of rate constant
A.
k decreases
B.
k remains constant
C.
k increases
D.
k becomes zero
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ANSWER :
C. k increases