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NEET UG Chemical Kinetics — practice questions — page 4

Explore 174 free Chemical Kinetics questions in NEET UG 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 91–120 of 174.

True or false on kineticsRead the answer and worked solution →Quick picks on kineticsRead the answer and worked solution →Match each term to its meaningRead the answer and worked solution →Order or molecularityRead the answer and worked solution →Rate up or rate downRead the answer and worked solution →Find the order of a reactionRead the answer and worked solution →Fill the gaps on kineticsRead the answer and worked solution →Spot the one that does not fitRead the answer and worked solution →What is the overall order of a reaction with rate = k[A]^(3/2)[B]^(-1)?Read the answer and worked solution →A reaction is second order in X. If [X] is tripled, the rate becomes how many times larger?Read the answer and worked solution →For a first order reaction, 99.9% completion takes about how many half-lives?Read the answer and worked solution →If the rate constant roughly doubles per 10 degree rise, a 30 degree rise raises it about how much?Read the answer and worked solution →A first order reaction has t1/2 = 20 min. How long does 75% completion take?Read the answer and worked solution →A zero order reaction starts at 0.8 mol/L with k = 0.02 mol L^-1 s^-1. When is the reactant used up?Read the answer and worked solution →For 2NO + O2 giving 2NO2, rate = k[NO]^2[O2]. Doubling [NO] alone changes the rate how?Read the answer and worked solution →Zero order half-life varies with initial concentration how?Read the answer and worked solution →For a first order reaction, ln[R] plotted against time gives a line with what slope?Read the answer and worked solution →Decomposition of ammonia on hot platinum at high pressure follows which order?Read the answer and worked solution →Thermal decomposition of HI on a gold surface is a reaction of which order?Read the answer and worked solution →Radioactive decay of unstable nuclei follows which kinetics?Read the answer and worked solution →Hydrolysis of ethyl acetate in a large excess of water behaves as which type of reaction?Read the answer and worked solution →Inversion of cane sugar in water is commonly classed as what?Read the answer and worked solution →Which value can the molecularity of a reaction never take?Read the answer and worked solution →Molecularity has meaning only for which kind of reaction?Read the answer and worked solution →Decomposition of ammonium nitrite into N2 and water is what molecularity?Read the answer and worked solution →The elementary step 2HI giving H2 + I2 has what molecularity?Read the answer and worked solution →Why are reactions of molecularity three rare and slow?Read the answer and worked solution →Which step controls the overall rate of a multi-step reaction?Read the answer and worked solution →In the iodide-catalysed decomposition of H2O2, which species is the intermediate?Read the answer and worked solution →A plot of ln k against 1/T is a straight line with what slope?Read the answer and worked solution →

Worked practice questions

True or false on kinetics

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Questions
  1. Statement is true
    Yes
    Statement
    Order of a reaction can be a fraction.
  2. Statement is true
    No
    Statement
    Molecularity can be zero.
  3. Statement is true
    No
    Statement
    A catalyst is used up in the reaction.
  4. Statement is true
    Yes
    Statement
    Raising temperature raises the rate.
  5. Statement is true
    Yes
    Statement
    Half-life is when half the reactant is left.
  6. Statement is true
    No
    Statement
    Order can be read off the balanced equation.
Instructions
Decide whether each statement is true or false.
_Source: syllabus Chemistry Part I, Chapter 4, Chemical Kinetics._

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Quick picks on kinetics

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Questions
  1. Question
    Order of a reaction is found by:
    Choices
    1. Experiment
    2. The equation
    3. Guesswork
    Correct choice
    Experiment
  2. Question
    One reacting species makes a step:
    Choices
    1. Bimolecular
    2. Unimolecular
    3. Trimolecular
    Correct choice
    Unimolecular
  3. Question
    Half the reactant remains at the:
    Choices
    1. Full life
    2. Mean life
    3. Half-life
    Correct choice
    Half-life
  4. Question
    A catalyst changes the rate but is not:
    Choices
    1. Consumed
    2. Present
    3. Weighed
    Correct choice
    Consumed
  5. Question
    The Arrhenius equation was first proposed by:
    Choices
    1. Arrhenius
    2. Van't Hoff
    3. Clausius
    Correct choice
    Van't Hoff
Instructions
Tap the correct answer before the round moves on.
_Source: syllabus Chemistry Part I, Chapter 4, Chemical Kinetics._

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Match each term to its meaning

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Matching pairs
  1. Left
    Order
    Right
    Found by experiment only
  2. Left
    Molecularity
    Right
    Species colliding at once
  3. Left
    Half-life
    Right
    Time to halve the reactant
Instructions
Tap a term, then tap what it stands for.
_Source: syllabus Chemistry Part I, Chapter 4, Chemical Kinetics._

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More Chemistry topics

Amines and BiomoleculesAldehydes, Ketones and Carboxylic AcidsEquilibriumRedox ReactionsHydrocarbonsChemical Bonding and Molecular StructureSolutionsStructure of Atom