JEE Questions for Chemistry Chemical Kinetics Quiz 4 - MCQExams.com

2A → B + C would be a zero order reaction when
  • the rate of reaction is proportional to square of conc. of A
  • the rate of reaction remains same at any conc. of A.
  • the rate remains unchanged at any conc. of B and C
  • the rate of reaction doubles if conc. of B is increased to double.
A graph plotted between log k vs 1/T for calculating activation energy is shown by

  • Chemistry-Chemical Kinetics-1567.png
  • 2)
    Chemistry-Chemical Kinetics-1568.png

  • Chemistry-Chemical Kinetics-1569.png

  • Chemistry-Chemical Kinetics-1570.png
The potential energy diagram for a reaction R → P is given below:
∆H0 of the reaction corresponds to the energy
Chemistry-Chemical Kinetics-1571.png
  • a
  • b
  • c
  • a + b
For the reaction system 2NO(g) +O2(g) → 2NO2(g) the volume is suddenly reduced to half its value by increasing the pressure on it. If the reaction is of first order with respect to O2 and second order with respect to NO, the rate of reaction will be
  • diminish to one-eight of its initial value
  • increase to eight times of its initial value
  • increase to four times its initial value
  • diminish to one-fourth of its initial value
For a chemical reaction... can never be a fraction
  • order
  • half-life
  • molecularity
  • rate constant
The half life of a first order reaction is 10 min. If initial amount is 0.08 mol/litre and concentration at some instant is 0.01 mol/litre, then t =
  • 10 min
  • 30 min
  • 20 min
  • 40 min

Chemistry-Chemical Kinetics-1573.png

  • Chemistry-Chemical Kinetics-1574.png
  • 2)
    Chemistry-Chemical Kinetics-1575.png

  • Chemistry-Chemical Kinetics-1576.png

  • Chemistry-Chemical Kinetics-1577.png
The rate of a chemical reaction doubles for every 10oC rise in temperature. If the temperature is increased by 60oC, the rate of reaction increases by about
  • 20 times
  • 32 times
  • 64 times
  • 128 times
The concentration of a reactant in a solution falls (i) from 0.2 to 0.1 M in 2 hrs (ii) from 0.2 to 0.005 M in 4 hrs. The order of the hydrolysis of the reactant is
  • zero
  • two
  • one
  • half
Rate of reation is defined as
  • decrease in the concentration of a reactant
  • increase in the concentration of a product
  • change in the concentration of any one of the reactants or products per unit time.
  • all the above three are correct
______ does not affect the rate of reaction.
  • size of the vessel
  • amount of the reactants
  • physical state of reactants
  • ΔH of reaction
In the reaction K1 and K2 are the velocity constants for the forward and backward reaction respectively. The equilibrium constant is

  • Chemistry-Chemical Kinetics-1579.png
  • 2)
    Chemistry-Chemical Kinetics-1580.png

  • Chemistry-Chemical Kinetics-1581.png
  • none of the above
Which of the following is a reaction of zero order ?

  • Chemistry-Chemical Kinetics-1582.png
  • 2)
    Chemistry-Chemical Kinetics-1583.png

  • Chemistry-Chemical Kinetics-1584.png

  • Chemistry-Chemical Kinetics-1585.png
A reaction involving two different reactants can never be a ....
  • bimolecular reaction
  • Unimolecular reaction
  • first order reaction
  • second order reaction
For a reaction 3A ηProducts, the order of reaction
  • 3
  • 1,2 or 3
  • zero
  • any value between 1 and 3
The rate law of a reaction is rate = K [A]2 [B]. On doubling the concentration of both A and B the rate x will become ...
  • x3
  • 8x
  • 4x2
  • 9x
For the reaction CH3COCH3 + I2 + H+ ® Products, the rate is governed by, rate = K[CH3COCH3 ] [H+]. The rate order of iodine is = ______.
  • 3
  • 2
  • 1
  • 0

Chemistry-Chemical Kinetics-1588.png
  • A → B
  • B → C
  • C → D
  • A → D
For the reaction 2A + B → Products, reaction rate = K [A][B]2 . Concentration of A is doubled and that of B is halved the rate of reaction will be ...
  • doubled
  • halved
  • unaffected
  • four times
In one reaction concentration of reaction A is increased by 16 times, the rate increases only two times. The order of the reaction would be ...
  • 2
  • 4
  • 1/2
  • 1/4
The rate constant of a reaction has same units as the rate of reaction. The reaction is of ...
  • third order
  • second order
  • first order
  • zero order
The rate constant of reaction is 3 × 10-3 bar-1 sec-1. The order of reaction is
  • 1
  • 2
  • 3
  • 0
The rate constant of reaction is 5 × 10-2 litre3 mole-3 minite-1. The order of reaction is...
  • 1
  • 2
  • 3
  • 4
For a single step reaction A + 2B → Products, the molecularity is
  • zero
  • 1
  • 2
  • 3
If initial concentration is doubled, the time for half reaction is also doubled. The order of reaction is ...
  • First
  • Second
  • Third
  • Zero
If a is the initial concentration of the reactant, the half life period of the reaction of the nth order is proportional to ...
  • an+1
  • a1-n
  • an
  • an-1
In the first order reaction the concentration of the reactants is reduced to 25% in one hour. The half life period of the reaction is ...
  • 120 min
  • 4 hr
  • 30 min
  • 15 min
For the First order reaction with half life is 150 seconds, the time taken for the concentration of the reactant to fall from m/10 to m/100 will be approximately
  • 600 s
  • 900 s
  • 500 s
  • 1500 s
The half life period of a first order reaction is 15 minutes. The amount of substance left after one hour will be ...

  • Chemistry-Chemical Kinetics-1597.png
  • 2)
    Chemistry-Chemical Kinetics-1598.png

  • Chemistry-Chemical Kinetics-1599.png

  • Chemistry-Chemical Kinetics-1600.png
The minimum amount of energy required for the reacting molecules to undergo reaction is called :
  • potential energy
  • internal energy
  • activation energy
  • threshold energy
0:0:1


Answered Not Answered Not Visited Correct : 0 Incorrect : 0

Practice Chemistry Quiz Questions and Answers