Arrhenius Equation NEET Questions

Physical Chemistry - Chemical Kinetics

Arrhenius Equation MCQ Questions


7.
Unit of frequency factor ‘A’ in Arrhenius equation is
A.
s⁻¹
B.
mol⁻¹·L·s⁻¹
C.
mol·L⁻¹·s⁻¹
D.
mol·L⁻¹
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ANSWER :
A. s⁻¹
8.
The Arrhenius equation is applicable to
A.
Only gaseous reactions
B.
Only catalyzed reactions
C.
Only equilibrium reactions
D.
Most chemical reactions
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ANSWER :
D. Most chemical reactions
9.
Arrhenius equation helps in calculating
A.
Rate of reaction
B.
Equilibrium constant
C.
Activation energy
D.
Gibbs free energy
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ANSWER :
C. Activation energy
10.
ln k vs 1/T plot of a reaction is a straight line with slope -5000 K. The activation energy is (R = 8.314 J/mol·K):

NEET - 2023

A.
20.8 kJ/mol
B.
41.6 kJ/mol
C.
24.6 kJ/mol
D.
33.3 kJ/mol
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ANSWER :
B. 41.6 kJ/mol
11.
As per Arrhenius equation, when temperature increases, the rate constant
A.
k decreases
B.
k remains constant
C.
k increases exponentially
D.
k increases linearly
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ANSWER :
C. k increases exponentially
12.
ln(k) vs 1/T plot is a
A.
Straight line
B.
Parabola
C.
Hyperbola
D.
Exponential curve
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ANSWER :
A. Straight line