Chemical Kinetics Test

Chemical Kinetics

This is chemical kinetics Test-01 for CBSE class 12 Chemistry.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Study of rate of chemical reaction is known as
  • A
    Chemical thermodynamics
  • B
    Chemical equilibrium
  • C
    Chemical change
  • D
    Chemical kinetics
    Correct
2
Which among the following is an instantaneous reaction?
  • A
    Rusting of iron
  • B
    Hydrolysis of starch
  • C
    Burning of a log of wood
  • D
    Precipitation of silver chloride
    Correct
3
The rate of reaction can be measured as
  • A
    Rate of disappearance of reactant
  • B
    Both (b) and (c).
    Correct
  • C
    Rate of appearance of reactant
  • D
    Rate of appearance of the product
4
Rate of reaction for the combustion of propane is equal to
Question 4 figure 1
  • A
    Option A
  • B
    Option B
  • C
    All of these
    Correct
  • D
    Option D
5
What is the order of a reaction which has a rate expression ; Rate =$k{\left[ A \right]^{3/2}}{\left[ B \right]^{ - 1}}$
  • A
    $\frac{3}{2}$
  • B
    $\frac{1}{2}$
    Correct
  • C
    1
  • D
    0
6
Molecularity of a reaction
  • A
    Is always a whole number
    Correct
  • B
    Can have a fractional values
  • C
    Can be zero
  • D
    Cannot be less than 2
7
For which of the following reaction the units of rate constant and rate of the reaction are same?
  • A
    Zero order reaction
    Correct
  • B
    Third order reaction
  • C
    Second order reaction
  • D
    First order reaction
8
Which of the following statement is true for order of a reaction?
  • A
    It can be written from the balanced chemical equation
  • B
    It can have fractional value
    Correct
  • C
    It depends on the stiochiometric coefficients of reactants as well as products
  • D
    It cannot be determined experimentally
9
For a reaction; pA +qB products, the rate law expression is ${\text{r}}\,\,{\text{ = }}\,\,{\text{k}}{\left[ {\text{A}} \right]^{\text{l}}}{\left[ {\text{B}} \right]^{\text{m}}}$ . Which among the following statement is true for this expression?
  • A
    (p+q) = (l+m)
  • B
    (p+q) > (l+m)
  • C
    (p+q) $ \ne $ (l+m)
  • D
    (p+q) may or may not be equal to (l+m)
    Correct
10
For the first order reaction, half life is equal to
  • A
    $\frac{{0.693}}{K}$
    Correct
  • B
    $\frac{{\left[ {{R_o}} \right]}}{K}$
  • C
    $\frac{{\left[ {{R_o}} \right]}}{{2K}}$
  • D
    $\frac{{2.303\left[ {{R_o}} \right]}}{K}$
11
Straight line graph for first order reaction is obtained between
  • A
    Log[$R_o$] & t
  • B
    [R] & t
  • C
    ln[R] & t
    Correct
  • D
    None of these
12
The effect of temperature on reaction rate is given by
  • A
    Arrhenius equation
    Correct
  • B
    Kirchoff’s equation
  • C
    Clausius Claperon equation
  • D
    Gibb’s Helmholtz equation
13
The chemical reaction in which reactants require high amount of activation energy are generally
  • A
    Instantaneous
  • B
    Slow
    Correct
  • C
    Spontaneous
  • D
    Fast
14
The minimum amount of energy required by the reacting molecules at the time of collisions in order to produce effective collisions is called
  • A
    Threshold energy
    Correct
  • B
    Potential energy
  • C
    Internal energy
  • D
    Activation energy
15
The rate of chemical reaction becomes double for every 10o rise in temperature because of
  • A
    Decrease in activation energy
  • B
    Increase in activation energy
  • C
    Increase in number of molecular collision
    Correct
  • D
    Increase in number of activated molecules