Chemical Kinetics Test

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Chemical Kinetics Test - 6

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Weekly Quiz Competition

Question 1
1 / -0

The substance that slows down the reaction without being consumed is known as

A
Hormones

B
Positive catalyst

C
Catalysis

D
Inhibitors

Solution

Inhibitors inhibits the action of catalyst and hence slows down the rate of reaction.
Question 2
1 / -0

Which among the following statement is not true for catalyst?

A
They increases or decreases the rate of reaction

B
They are not consumed by the reaction

C
Small quantity is used to carry out reaction

D
They change the equilibrium constant

Solution

Catalyst does not change the equilibrium constant it only helps in reaching the equilibrium at a faster rate,i.e. it catalyses the forward as well as the backward reactions to the same extent so that the equilibrium state remains same but is reached earlier.
Question 3
1 / -0

Collision theory is applicable to

A
Pseudo order reaction

B
Zero order reaction

C
Bimolecular reaction

D
First order reaction

Solution

According to Collision theory two molecules must collide with each other with proper orientation in order to bring chemical reaction.
Question 4
1 / -0

The role of catalyst in a chemical reaction is to change the

A
Activation energy

B
Rate constant

C
Equilibrium constant

D
Arrhenius factor

Solution

Catalyst provides the low activation energy path for completion of reaction.
Question 5
1 / -0

Rate of ionic reactions are generally

A
Very fast

B
Moderate

C
Slow

D
Very slow

Solution

Ionic reactions occur instantaneously.therefore, ionic reactions are very fast reactions.
Question 6
1 / -0

The metabolism of hormones in human body is an example of

A
Second order reaction

B
Pseudo first order reaction

C
First order reaction

D
Pseudo second order reaction

Solution

It is a pseudo-first order reaction. pseudo means false. it appears to be a second-order reaction but actually, it is a first order reaction.
Question 7
1 / -0

If a reaction proceeds with a uniform rate throughout, the reaction is

A
Second order

B
Third order

C
First order

D
Zero order

Solution

Uniform Rate of reaction is independent of concentration of reactants.
Question 8
1 / -0

Rate of reaction does not remain constant throughout because

A
Density of reactants keep on changing

B
Volume of reactants keep on changing

C
Temperature of reactants keep on changing

D
Concentration of reactants keep on changing

Solution

Rate of reaction is dependent on concentration of reactants.if concentration of reactants change then rate of reaction become non-uniform.

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Chemical Kinetics Test - 6

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Chemical Kinetics Test - 6

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SHARING IS CARING

Question 1

Hormones

Positive catalyst

Catalysis

Inhibitors

Solution

Question 2

They increases or decreases the rate of reaction

They are not consumed by the reaction

Small quantity is used to carry out reaction

They change the equilibrium constant

Solution

Question 3

Pseudo order reaction

Zero order reaction

Bimolecular reaction

First order reaction

Solution

Question 4

Activation energy

Rate constant

Equilibrium constant

Arrhenius factor

Solution

Question 5

Very fast

Moderate

Slow

Very slow

Solution

Question 6

Second order reaction

Pseudo first order reaction

First order reaction

Pseudo second order reaction

Solution

Question 7

Second order

Third order

First order

Zero order

Solution

Question 8

Density of reactants keep on changing

Volume of reactants keep on changing

Temperature of reactants keep on changing

Concentration of reactants keep on changing

Solution

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