Rate Law NEET Questions

Physical Chemistry - Chemical Kinetics

Rate Law MCQ Questions


13.
The molecularity of an elementary reaction can be:
A.
1, 2, or 3
B.
Any integer including zero
C.
Fractional
D.
Negative
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ANSWER :
A. 1, 2, or 3
14.
For a zero order reaction, the rate of reaction is:
A.
Inversely proportional to concentration
B.
Independent of concentration of reactants
C.
Proportional to square of concentration
D.
Directly proportional to concentration
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ANSWER :
B. Independent of concentration of reactants
15.
The integrated rate equation for a zero order reaction is:
A.
ln[A] = ln[A]₀ - kt
B.
[A] = [A]₀ e^(-kt)
C.
[A] = [A]₀ - kt
D.
1/[A] = 1/[A]₀ + kt
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ANSWER :
C. [A] = [A]₀ - kt
16.
The half-life (t₁/₂) of a zero order reaction is:
A.
0.693/k
B.
[A]₀/2k
C.
2[A]₀/k
D.
1/(k[A]₀)
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ANSWER :
B. [A]₀/2k
17.
Which of the following plots is linear for a zero order reaction?
A.
log[A] vs t
B.
[A] vs t
C.
1/[A] vs t
D.
log(rate) vs log[A]
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ANSWER :
B. [A] vs t
18.
Examples of zero order reactions include:
A.
Decomposition of HI on gold surface
B.
Inversion of cane sugar
C.
Hydrolysis of ester in acidic medium
D.
Decomposition of N₂O₅
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ANSWER :
A. Decomposition of HI on gold surface