Activation Energy and its Calculation NEET Questions

Physical Chemistry - Chemical Kinetics

Activation Energy and its Calculation MCQ Questions


7.
Activation energy is independent of
A.
Temperature
B.
Nature of reactants
C.
Reaction path
D.
Catalyst
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ANSWER :
A. Temperature
8.
Which graph can be used to determine activation energy?
A.
log k vs T
B.
log k vs 1/T
C.
ΔG vs T
D.
ln T vs 1/k
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ANSWER :
B. log k vs 1/T
9.
Activation energy is calculated from the slope of
A.
ln k vs T
B.
log k vs T
C.
ln k vs 1/T
D.
log k vs k
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ANSWER :
B. log k vs T
10.
In Arrhenius equation, slope = –Ea/R is obtained when
A.
ln k is plotted vs T
B.
ln k is plotted vs 1/T
C.
log k is plotted vs T
D.
k is plotted vs T
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ANSWER :
B. ln k is plotted vs 1/T
11.
Activation energy is determined using
A.
Rate constant and time
B.
Temperature only
C.
Arrhenius plot
D.
Heat capacity
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ANSWER :
C. Arrhenius plot
12.
The slope of ln k vs 1/T graph is –5000 K. The activation energy is
A.
5000 J/mol
B.
41.65 kJ/mol
C.
5 kJ/mol
D.
50 kJ/mol
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ANSWER :
B. 41.65 kJ/mol