Quiz  /  Chemical Kinetics Class 11 MCQ Questions With Answers

  • 1. 
    What is the rate equation of following chemical reaction?2NaOH + H2SO4 → Na2SO4 + 2H2O

  • Rate = k.[NaOH]2.[H2SO4]
  • Rate = k.[NaOH].[H2SO4]
  • Rate = k.[NaOH]2
  • Rate = k.[NaOH]2.[H2SO4]2

  • 2. 
    What is explaining behaviors of a system at equilibrium?

  • Avagadro's Law
  • Boyles Law
  • Le Chatelier Principle
  • Collusion Theory

  • 3. 
    When following system is disturbed by addition of catalyst to the system container how does concentration of O2 change?2SO2(g) + O2(g) ↔ 2SO3(g) ΔH= +9kj/mol

  • Increase
  • Deacrease
  • No change

  • 4. 
    When following system is disturbed by addition of Oxygen gas to the system container how does concentration of SO2 change?2SO2(g) + O2(g) ↔ 2SO3(g) ΔH= +9kj/mol

  • Increase
  • Deacrease
  • No change

  • 5. 
    Limestone chunks are reaction with hydrochloric acid solution at constant temperature with average speed. If we crash the chunks of limestone into powder how would speed of reaction change?

  • Reaction speeds up
  • Reaction does not change
  • Reaction slows down
  • Reaction stops

  • 6. 
    A+B →C+D ΔH = -202kj/molHow can above reaction be classified in terms of energy exchange during chemical change?

  • Combination reaction
  • Endothermic reaction
  • Transthermal reaction
  • Exothermic reaction

  • 7. 
    When following system is disturbed by addition of inert gas to the system container how does concentration of SO3 change?2SO2(g) + O2(g) ↔ 2SO3(g) ΔH= +9kj/mol

  • Increase
  • Deacrease
  • No change

  • 8. 
    When following system is disturbed by increasing volume of system container how does concentration of SO2 change?2SO2(g) + O2(g) ↔ 2SO3(g) ΔH= +9kj/mol

  • Increase
  • Deacrease
  • No change

  • 9. 
    When following system is disturbed by addition of Hydrogen gas to the system container how does the system act?H2(g) + l2(g) ↔ 2HI(g)

  • System shifts products side
  • System shifts product side
  • System does nothing

  • 10. 
    What is the degree of the following chemical reaction?4Al + 3O2 → 2Al2O3

  • 4
  • 5
  • 6
  • 7

  • 11. 
    When following system is disturbed by addition of Nitrogen gas to the system container how does the system act?H2(g) + l2(g) ↔ 2HI(g)

  • System shifts product side
  • System shifts reactant side
  • System does nothing

  • 12. 
    What is the parameter to measure the rate or speed of a reaction beside time?

  • Change in volume
  • Change in consentration
  • Change in pressure
  • Change in temperature

  • 13. 
    To measure rate of reaction, either decreasing mass of solid reactant or increasing volume of gaseous products are used. Which of the following reactions uses increasing volume of gaseous product method to measure the its rate?

  • Reaction between iron metal and air
  • Reaction between sodium hydroxide and nitric acid
  • Reaction between  table salt and water
  • Reaction between hydrochloric acid and aluminum metal

  • 14. 
    When following system is disturbed by removing of Hydrogen iodide gas to the system container how does the system act?H2(g) + l2(g) ↔ 2HI(g)

  • System shifts product side
  • System shifts reactant side
  • System does nothing

  • 15. 
    What is the rate law for this mechanism?

  • rate = k[A][B]2
  • rate = [B][X]
  • rate = [A]0.5[B]1.5
  • rate = [W][Y][Z]

  • 16. 
    What is the theory which explains how chemical reaction occurs?

  • Diffusion
  • Big Bang
  • Collusion
  • Evalusion

  • 17. 
    The following data were measured for the reactionBF3(g) + NH3(g) ⟶ F3BNH3(g)What is the rate when [BF3] = 0.100 M and [NH3] = 0.500 M ?

  • .01704 M/s
  • .0852 M/s
  • .1704 M/s
  • .852 M/s

  • 18. 
    A possible rate law for a third overall order of a reaction is __________________

  • Rate = k [A]2[B]2
  • Rate = k [A][B]3
  • Rate = k [A]3 [B]
  • Rate = k [A]2[B]

  • 19. 
    For an elementary reaction 2A + B →C + D, the molecularity is

  • zero
  • one
  • two
  • three

  • 20. 
    A reaction is found to be second order with respect to carbon monoxide. If the concentration of carbon monoxide is doubled, the rate of reaction __________.

  • doubles
  • remains unchanged
  • increases by a factor of 4
  • is reduced by a factor of 2

  • 21. 
    The time in which half of the substance has reacted is

  • Half life period
  • Full life time
  • Both 1,2
  • None of the above

  • 22. 
    The rate law of the reaction 2N2O5 → 2NO2 + O2 is

  • r = k[N2O5 ]
  • r = k[N2O5 ]2
  • r = k[N2O5 ]0
  • r = k[NO2]4 [O2]

  • 23. 
    What letter represents the activation energy?

  • A
  • B
  • C
  • D

  • 24. 
    Which is an appropriate unit for the rate of a reaction?

  • mol dm-3 s
  • mol dm-3 s-1
  • mol dm-3
  • s

  • 25. 
    Consider the following rate law: Rate = k[A]n[B]mHow are the exponents n and m determined?

  • by using balanced chemical equation
  • By using the subscripts for the formulas
  • By educated guess
  • By experiment

  • 26. 
    Catalysts permit reactions to happen with a __________ activiation energy.

  • lower
  • higher

  • 27. 
    Given the following rate law, rate = k[A]2[B]if [A] were doubled, what must happen to [B] to keep the rate constant?

  • [B] must quadruple
  • [B] must double
  • [B] must be havled
  • [B] must be quartered

  • 28. 
    Which of the following are true of reaction rates?I. The overall rate law is determined by the fastest step of a reactionII. The presence of a catalyst will increase the number of molecules entering the transition stateIII. An increase in temperature will increase the rate of a reactionIV. Increasing the concentration of reactants will increase the rate at which products yield

  • II+III+IV
  • I+IV
  • II + III
  • I+II+III

  • 29. 
    Which of the following is NOT a factor affecting reaction rate?

  • temperature
  • catalysts
  • particle size
  • polarity
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