Chemical Kinetics Test

Result

Chemical Kinetics Test - 30

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Weekly Quiz Competition

Question 1
4 / -1

The rate determining step in a reaction is A + 2B → C. Doubling the concentration of B would make the reaction rate...

A
two times

B
same rate

C
four times

D
1/4 times
Question 2
4 / -1

If the order of reaction is zero. It means that

A
rate of reaction is independent of temperature

B
rate of reaction is independent of the concentration of the reacting species

C
the rate of formation of activated complex is zero

D
the rate of decomposition of activated complex is zero
Question 3
4 / -1

The reactions of higher order are rare because

A
many bady collisions involve very high activation energy

B
many bady collisions have a low probability

C
many bady collisions are not energetically favoured

D
many bady collisions can take place only in the gaseous phase.
Question 4
4 / -1

A

B

C

D
Question 5
4 / -1

A
1.5

B
2

C
0

D
1

Solution
Question 6
4 / -1

In the reaction A → B. When the concentration of A is changed from 0.1 M to 1 M, the rate of reaction increases by a factor of 100. The order of reaction with respect to A is ....

A
10

B
1

C
2

D
3
Question 7
4 / -1

For the reaction of A + B → C + D, doubling the concentration of both the reactants increases the reaction rate by 8 times and doubling the initial concentration of only B simply doubles the reaction rate. The rate law for the reaction is

A
r = K [A][B]²

B
r = K [A][B]

C
r = K [A]^1/2[B]

D
r = K [A]²[B]

Solution
Question 8
4 / -1

The unit of rate constant for a zero order reaction is ...

A
litre sec^-1

B
litre mole^-1 sec^-1

C
mole litre^-1 sec^-1

D
mole sec^-1

Solution
Question 9
4 / -1

The dimensions of the rate constant of a third order reaction involve.

A
only time

B
time and concentration

C
time and square of concentration

D
only concentration

Solution
Question 10
4 / -1

Which of the following statements is incorrect about the molecularity of a reaction ?

A
Molecularity of a reaction is the number of molecules in the slowest step.

B
Molecularity of a reaction is the number of molecules of the reaction present in the balanced equation.

C
There is no difference between order and molecularity of a reaction.

D
Molecularity is always a positive whole number.