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JEE Advanced Chemical Kinetics — practice questions — page 2

Explore 56 free Chemical Kinetics questions in JEE Advanced Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Chemical Kinetics questions and exercises with answers

Showing questions 31–56 of 56.

Spot the odd one outRead the answer and worked solution →Complete the collision theory modificationRead the answer and worked solution →The units of the rate constant for a zero-order reaction are:Read the answer and worked solution →True or false: order and molecularityRead the answer and worked solution →Instantaneous rate or average rate?Read the answer and worked solution →Complete the definition of activation energyRead the answer and worked solution →Tap everything that raises the rate of a reactionRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →True or false: what kinetics studiesRead the answer and worked solution →Which quantity is being described?Read the answer and worked solution →Assertion and reason: rates and constantsRead the answer and worked solution →Reading the definitions backRead the answer and worked solution →True or false: the Arrhenius pictureRead the answer and worked solution →A catalyst on the bench changes:Read the answer and worked solution →Match each symbol in the Arrhenius equation to its meaningRead the answer and worked solution →Order the energy story of a reactionRead the answer and worked solution →Read the order off the rate lawRead the answer and worked solution →True or false: where a rate law comes fromRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Tap every factor the chapter says affects the rateRead the answer and worked solution →The Arrhenius equationRead the answer and worked solution →Order the steps: find the order of a reactionRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →For a first-order reaction, the half-life period $t_{1/2}$ is related to the rate constant $k$ as:Read the answer and worked solution →Complete the definition of orderRead the answer and worked solution →Order or molecularity?Read the answer and worked solution →

Worked practice questions

Spot the odd one out

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Questions
  1. Items
    1. Activation energy
    2. Rate law
    3. Activated complex
    Odd item
    Rate law
  2. Items
    1. 1
    2. 2
    3. 3
    4. 1/2
    Odd item
    1/2
  3. Items
    1. Stoichiometry
    2. Collision frequency
    3. Steric factor
    Odd item
    Stoichiometry
Each group is one summary sentence. Source: syllabus Chemistry Part I, Ch 3 Chemical Kinetics.

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Complete the collision theory modification

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Missing parts
  1. Answer
    steric
    Choices
    1. steric
    2. thermal
    3. catalytic
  2. Answer
    orientation
    Choices
    1. orientation
    2. speed
    3. mass
  3. Answer
    effective
    Choices
    1. effective
    2. elastic
    3. random
Complete the statement
Collision theory introduces a {0} factor P, which accounts for the {1} of the colliding molecules and so for {2} collisions.
Collision theory adds orientation to the Arrhenius picture. Source: syllabus Chemistry Part I, Ch 3 Chemical Kinetics.

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The units of the rate constant for a zero-order reaction are:

  1. $\text{mol}\,L^{-1}\,s^{-1}$
  2. $L^2\,\text{mol}^{-2}\,s^{-1}$
  3. $L\,\text{mol}^{-1}\,s^{-1}$
  4. $s^{-1}$
Show answer and solution

Correct answer: A. $\text{mol}\,L^{-1}\,s^{-1}$

Units of $k$ for an $n$-th order reaction are $\text{mol}^{1-n}\,L^{n-1}\,s^{-1}$. Putting $n=0$ gives $\text{mol}\,L^{-1}\,s^{-1}$, which is the same as the unit of rate itself, since the rate of a zero-order reaction is independent of concentration.

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