NEET Chemistry Chemical Kinetics / रासायनिक बलगतिकी Question Bank

done Question - Assertion Reason Total Questions - 11

• question_answer1)

  Assertion: Instantaneous rate of reaction is equal to \[dx/dt\].

  Reason: It is the rate of reaction at any particular instant of time.

  Read the assertion and reason carefully to mark the correct option out of the options given below:

  A)
  If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If the assertion and reason both are false. done clear
  E)
  If assertion is false but reason is true. done clear
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• question_answer2)

  Assertion: Molecularity has no meaning for a complex reaction.

  Reason: The overall molecularity of a complex reaction is equal to the molecularity of the slowest step.

  Read the assertion and reason carefully to mark the correct option out of the options given below:

  A)
  If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If the assertion and reason both are false. done clear
  E)
  If assertion is false but reason is true. done clear
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• question_answer3)

  Assertion: If in a zero order reaction, the concentration of the reactant is doubled, the half-life period is also doubled.

  Reason: For a zero order reaction, the rate of reaction is independent of initial concentration.

  Read the assertion and reason carefully to mark the correct option out of the options given below:

  A)
  If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If the assertion and reason both are false. done clear
  E)
  If assertion is false but reason is true. done clear
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• question_answer4)

  Assertion: If the activation energy of a reaction is zero, temperature will have no effect on the rate constant.

  Reason: Lower the activation energy, faster is the reaction.

  Read the assertion and reason carefully to mark the correct option out of the options given below:

  A)
  If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If the assertion and reason both are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer5)

  Assertion: According to steady state hypothesis, in a multistep reaction, the change in concentration with time for reactive intermediates is zero.

  Reason: The intermediates are so reactive that after a brief initial period their concentrations rise from zero to a small value and remains constant for most of the duration of the reaction.

  Read the assertion and reason carefully to mark the correct option out of the options given below:

  A)
  If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If the assertion and reason both are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer6)

  Assertion: Half-life period of a reaction of first order is independent of initial concentration.

  Reason: Half-life period for a first order reaction \[{{t}_{1/2}}=\frac{2.303}{K}\log 2.\]

  Read the assertion and reason carefully to mark the correct option out of the options given below:

  A)
  If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If the assertion and reason both are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer7)

  Assertion: The photochemical reactions \[{{H}_{2}}+C{{l}_{2}}\to 2HCl\] and \[{{H}_{2}}+B{{r}_{2}}\to 2HBr\] have equal quantum efficiencies.

  Reason: Both the reactions proceed by similar mechanism.

  Read the assertion and reason carefully to mark the correct option out of the options given below:

  A)
  If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If the assertion and reason both are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer8)

  Assertion: Vision is not a photochemical reaction.

  Reason: Halogenation of alkenes is a photochemical reaction.

  Read the assertion and reason carefully to mark the correct option out of the options given below:

  A)
  If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If the assertion and reason both are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer9)

  Assertion: Glow worm shows chemiluminescence.

  Reason: Glow worm emits light due to oxidation of protein, luciferin present in it.

  Read the assertion and reason carefully to mark the correct option out of the options given below:

  A)
  If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If the assertion and reason both are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer10)

  Assertion: The rate of reaction is always negative.

  Reason: Minus sign used in expressing the rate shows that concentration of product is decreasing.

  Read the assertion and reason carefully to mark the correct option out of the options given below:

  A)
  If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If the assertion and reason both are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow

• question_answer11)

  Assertion: The kinetic of the reaction\[mA+nB+pC\to \]\[m'X+n'Y+p'Z\]obeys the rate expression as\[\frac{dx}{dt}=k{{[A]}^{m}}{{[B]}^{n}}\].

  Reason: The rate of the reaction does not depend upon the concentration of C.

  Read the assertion and reason carefully to mark the correct option out of the options given below:

             
  A)
  If both assertion and reason are true and the reason is the correct explanation of the assertion. done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of the assertion. done clear
  C)
  If assertion is true but reason is false. done clear
  D)
  If the assertion and reason both are false. done clear
  E)
  If assertion is false but reason is true. done clear
  View Solution play_arrow