22
MCQ (Multiple Correct Answer)
Which of the following statements are applicable to a balanced chemical equation of an elementary reaction?
A
Order is same as molecularity
B
Order is less than the molecularity
C
Order is greater than the molecularity
D
Molecularity can never be zero
23
MCQ (Multiple Correct Answer)
In any unimolecular reaction .............. .
A
only one reacting species is involved in the rate determining step
B
the order and the molecularity of slowest step are equal to one
C
the molecularity of the reaction is one and order is zero
D
both molecularity and order of the reaction are one
24
MCQ (Multiple Correct Answer)
For a complex reaction ......... .
A
order of overall reaction is same as molecularity of the slowest step
B
order of overall reaction is less than the molecularity of the slowest step
C
order of overall reaction is greater than molecularity of the slowest step
D
molecularity of the slowest step is never zero or non-integer
25
MCQ (Multiple Correct Answer)
At high pressure the following reaction is zero order.
$$2 \mathrm{NH}_3(g) \frac{1130 \mathrm{~K}}{\text { Platinum catalyst }} \mathrm{N}_2(g)+3 \mathrm{H}_2(g)$$
Which of the following options are correct for this reaction?
A
Rate of reaction = Rate constant
B
Rate of the reaction depends on concentration of ammonia
C
Rate of decomposition of ammonia will remain constant until ammonia disappears completely
D
Further increase in pressure will change the rate of reaction
26
MCQ (Multiple Correct Answer)
During decomposition of an activated complex
A
energy is always released
B
energy is always absorbed
C
energy does not change
D
reactants may be formed