Chemical Kinetics Test

Chemical Kinetics

This is chemical kinetics Test-02 for CBSE class 12 Chemistry.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
The expression which relates the rate of reaction to the concentration of the reactants are called
  • A
    Rate constant
  • B
    Rate law
    Correct
  • C
    Differential rate equation
  • D
    Half life
2
The rate is independent of the concentration of the reactants in
  • A
    Zero order
    Correct
  • B
    Second order
  • C
    First order
  • D
    Third order
3
The constant k used in rate equation is known as
  • A
    Velocity constant
    Correct
  • B
    Reaction constant
  • C
    Order constant
  • D
    Distance constant
4
The radioactive isotope used in determining the age of organic substances is
  • A
    Nitrogen – 14
  • B
    Carbon – 14
    Correct
  • C
    Nitrogen – 15
  • D
    Carbon – 12
5
A reaction whose order is different from the actual due to large excess concentration of one of the reactants is called
  • A
    First order reaction
  • B
    Pseudo – order reaction
    Correct
  • C
    Second order reaction
  • D
    Zero order reaction
6
The substance that slows down the reaction without being consumed is known as
  • A
    Hormones
  • B
    Catalysis
  • C
    Inhibitors
    Correct
  • D
    Positive catalyst
7
Which among the following statement is not true for catalyst?
  • A
    They changes the equilibrium constant
    Correct
  • B
    Small quantity is used to carry out reaction
  • C
    They are not consumed by the reaction
  • D
    They increases or decreases the rate of reaction
8
The relationship between temperature and rate constant is given by the relation:${\text{k = A}}{{\text{e}}^{{\text{ - }}{{\text{E}}_{\text{a}}}/{\text{RT}}}}$ A represent
  • A
    Arrhenius factor
    Correct
  • B
    Half life
  • C
    Rate constant
  • D
    Activation energy
9
Collision theory is applicable to
  • A
    First order reaction
  • B
    Bimolecular reaction
    Correct
  • C
    Zero order reaction
  • D
    Pseudo order reaction
10
The role of catalyst in a chemical reaction is to change the
  • A
    Equilibrium constant
  • B
    Activation energy
    Correct
  • C
    Arrhenius factor
  • D
    Rate constant
11
Rate of ionic reactions are generally
  • A
    Very fast
    Correct
  • B
    Slow
  • C
    Moderate
  • D
    Very slow
12
The metabolism of hormones in human body is an example of
  • A
    Pseudo first order reaction
    Correct
  • B
    Second order reaction
  • C
    Pseudo second order reaction
  • D
    First order reaction
13
If a reaction proceeds with a uniform rate throughout, the reaction is
  • A
    Third order
  • B
    Second order
  • C
    Zero order
    Correct
  • D
    First order
14
Rate of reaction does not remain constant throughout because
  • A
    Temperature of reactants keep on changing
  • B
    Volume of reactants keep on changing
  • C
    Concentration of reactants keep on changing
    Correct
  • D
    Density of reactants keep on changing
15
The reaction$A{\text{ }} + {\text{ }}2 \to {\text{ }} + {\text{ }}D$ obeys the rate equation$Rate{\text{ }} = {\text{ }}k{\left[ a \right]^x}{\left[ b \right]^y}$what would be the order of this reaction?
  • A
    x + y
    Correct
  • B
    x – y
  • C
    x
  • D
    Cannot be predicted with the equation