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Chemistry - Chemical Kinetics

Practise 89 NEET previous year questions on Chemical Kinetics, compiled from papers spanning 2002 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty NEET tests.

Chemical Kinetics has been asked in 24 of the 39 years of NEET papers analysed (1988–2026), with 89 questions in all. 30% of them were easy, 49% moderate and 20% tough. Most of its questions came from 2009, with 10 questions that year. In the last three years (2024–2026) it had 13 questions across 13 papers, about 1 per paper.

The chapter's 5 topics are not weighted equally: Arrhenius theory (24 questions, 27%), Integrated rate laws (22 questions, 25%), and Rate law and rate constant (20 questions, 22%) have been asked the most. Arrhenius theory has also led over the last five years, with 8 questions. Arrhenius theory has produced the most tough questions (9).

  1. 1Match List I with List II : List I (Order of reaction) List II (Unit of rate constant) A. Zero order I. B. First order II. C. Second order I2026 (Cancelled)Rate law and rate constant
  2. 2For a certain reaction Product, the plot of concentration vs time has a negative slope as shown. The order of reaction is :2026 (Cancelled)Integrated rate laws
  3. 3Given below is an expression for the rate constant of a first order reaction occurring at a certain temperature, (K). The energy of activati2026 (Cancelled)Arrhenius theory
  4. 4For an elementary chemical reaction, the Arrhenius plot is given below. If the energy of activation is kJ mol and R J K mol , the temperatur2026 (Re-NEET)Arrhenius theory
  5. 5is a zero-order reaction, where mol L min . If the initial concentration of A is M, then the time taken to complete of the reaction will be2026 (Re-NEET)Integrated rate laws
  6. 6If the half-life for a first order reaction is 1 minutes, then the time required for completion of the reaction is closest to:2025Integrated rate laws
  7. 7If the rate constant of a reaction is , how much time does it take for concentration of the reactant to get reduced to ? (Given )2025Integrated rate laws
  8. 8Activation energy of any chemical reaction can be calculated if one knows the value of2024Arrhenius theory
  9. 9Which plot of vs is consistent with Arrhenius equation?2024Arrhenius theory
  10. 10The rate of a reaction quadruples when temperature changes from to . Calculate the energy o activation. Given2024Arrhenius theory
  11. 11Following data is for a reaction between reactants A and B : The order of the reaction with respect to and , respectively, are2024 (Re-NEET)Methods to determine order of reaction
  12. 12Which of the following plot represents the variation of versus in accordance with Arrhenius equation?2024 (Re-NEET)Arrhenius theory
  13. 13Rate constants of a reaction at 500 K and are and , respectively; then, activation energy of the reaction is : (Given:2024 (Re-NEET)Arrhenius theory
  14. 14Given below are two statements: one labelled as Assertion A and other is labelled as Reason R : Assertion A: A reaction can have zero activa2023 (All India)Arrhenius theory
  15. 15For a certain reaction, the rate = k [ A ] 2 [ B ] , when the initial concentration of A is tripled keeping concentration of B constant, the2023 (All India)Rate law and rate constant
  16. 16The correct option for the rate law that corresponds to overall first order reaction is2023 (Manipur)Rate law and rate constant
  17. 17For a reaction The average rate of appearance of is given by . The correct relation between the average rate of appearance of with the avera2023 (Manipur)Rate of reaction
  18. 18The given graph is a representation of kinetics of a reaction. The y and x axes for zero and first order reactions, respectively are2022 (Phase 1)Integrated rate laws
  19. 19For a first order reaction A Products, initial concentration of A is 0 . 1 M , which becomes 0 . 001 M after 5 minutes. Rate constant for th2022 (Phase 1)Integrated rate laws
  20. 20The half life of a first order reaction is 2000 years. If the concentration after 8000 years is , then the initial concentration was :2022 (Phase 2)Integrated rate laws
  21. 21For a chemical reaction rate of formation of is and rate of disappearance of is . The rate of reaction and amount of consumed in interval of2022 (Phase 2)Rate of reaction
  22. 22For a reaction A B , enthalpy of reaction is - 4 . 2 kJ mol - 1 and enthalpy of activation is 9 . 6 kJ mol - 1 . The correct potential energ2021Arrhenius theory
  23. 23The slope of Arrhenius Plot lnk v/s 1 T of first order reaction is - 5 10 3 K . The value of E a of the reaction is. Choose the correct opti2021Arrhenius theory
  24. 24The rate constant for a first order reaction is 4.606 10 3 s 1 . The time required to reduce 2.0 g of the reactant to 0.2 g is :2020 (Phase 1)Integrated rate laws
  25. 25An increase in the concentration of the reactants of a reaction leads to change in2020 (Phase 1)Arrhenius theory
  26. 26The half-life for a zero order reaction having 0 . 02 M initial concentration of reactant is 100 s . The rate constant (in mol L - 1 s - 1 )2020 (Phase 2)Integrated rate laws
  27. 27In collision theory of chemical reaction, Z AB represents2020 (Phase 2)Arrhenius theory
  28. 28If the rate constant for a first order reaction is k , the time ( t ) required for the completion of 99 % of the reaction is given by2019 (All India)Methods to determine order of reaction
  29. 29For the chemical reaction N 2 g + 3 H 2 g 2 N H 3 g , the correct option is:2019 (All India)Rate of reaction
  30. 30A first order reaction has a rate constant of . The time required for of this reactant to reduce to will be [Given that ]2019 (Odisha)Methods to determine order of reaction
  31. 31For a reaction, activation energy and the rate constant at is . The rate constant at will be [Given that gas constant ]2019 (Odisha)Arrhenius theory
  32. 32When initial concentration of the reactant is doubled, what happens to the half-life period of a zero order reaction?2018Integrated rate laws
  33. 33What is the correct difference between first and second order reactions?2018Integrated rate laws
  34. 34A first-order reaction has a specific reaction rate 10 - 2 sec - 1 . How much time will it take for 20 g the reactant to reduce to 5 g ?2017Integrated rate laws
  35. 35Mechanism of a hypothetical reaction X 2 + Y 2 2 XY is given below: (i) X 2 X + X fast (ii) X + Y 2 XY + Y slow (iii) X + Y XY fast The over2017Rate law and rate constant
  36. 36The rate of a first-order reaction is 0.04 m o l l - 1 s - 1 at 10 second and 0.03 m o l l - 1 s - 1 at 20 seconds after initiation of the r2016 (Phase 1)Integrated rate laws
  37. 37The addition of a catalyst during a chemical reaction alters which of the following quantities?2016 (Phase 1)Arrhenius theory
  38. 38The decomposition of phosphine P H 3 on tungsten at low pressure is a first-order reaction. It is because the2016 (Phase 2)Rate of reaction
  39. 39The activation energy of a reaction can be determined from the slope of which of the following graphs?2015 (Phase 1)Arrhenius theory
  40. 40When initial concentration of a reactant is doubled in a reaction, its half-life period is not affected. The order of the reaction is:2015 (Phase 1)Methods to determine order of reaction
  41. 41The rate constant of the reaction A B is 0.6 10 - 3 mole per liter per second. If the initial concentration of A is 5 M, then the concentrat2015 (Phase 2)Rate law and rate constant
  42. 42What is the activation energy for a reaction if its rate doubles when the temperature is raised from to2013 (All India)Arrhenius theory
  43. 43A reaction having equal energies of activation for forward and reverse reactions has2013 (All India)Arrhenius theory
  44. 44For a reaction between and the order with respect to is 2 and the other with respect to is 3 . The concentrations of both and are doubled, t2013 (Karnataka)Rate law and rate constant
  45. 45A reaction is complete in 2 hours and complete in 4 hours. The order of reaction is:2013 (Karnataka)Rate law and rate constant
  46. 46Activation energy and rate constants and of a chemical reaction at two different temperatures and are related by2012 (Mains)Arrhenius theory
  47. 47In a reaction, Product, rate is doubled when the concentration of is doubled, and rate increases by a factor of 8 when the concentrations of2012 (Screening)Rate law and rate constant
  48. 48In a zero order reaction for every rise of temperature, the rate is doubled. If the temperature is increased from to , the rate of the react2012 (Screening)Rate of reaction
  49. 49The half-life of a substance in a certain enzyme-catalysed reaction is . The time required for the concentration of the substance to fall fr2011 (Mains)Integrated rate laws
  50. 50The rate of reaction can be written in three ways The relationship between and and between and are2011 (Mains)Rate of reaction

Frequently Asked Questions

1.How many questions are available for Chemical Kinetics?

This chapter includes 89 questions compiled from NEET papers spanning 2002 to 2026.

2.Are these questions only from NEET, or from other exams too?

These are NEET questions specifically for the Chemical Kinetics chapter. Questions from other exams like AIIMS or JIPMER are organised separately under their respective exam sections.

3.Is Chemical Kinetics an important chapter for NEET Chemistry?

Chemical Kinetics has appeared in 24 of the 25 years of NEET papers covered here, with 89 questions across 38 papers - about 2 per paper it appears in.

4.What is the difficulty level of Chemical Kinetics questions in NEET?

Of the 89 questions analysed for this chapter, 30% are easy, 49% moderate and 20% tough. 2009 had the most, with 10 questions.

5.Which topics in Chemical Kinetics should I focus on?

These topics have carried the most weightage in Chemical Kinetics:

  • Arrhenius theory - 24 questions (27%)
  • Integrated rate laws - 22 questions (25%)
  • Rate law and rate constant - 20 questions (22%)
  • Arrhenius theory has produced the most tough questions (9).
6.Is Chemical Kinetics's weightage in NEET going up or down?

Across all 38 papers analysed, Chemical Kinetics has averaged about 2.3 questions per paper. In the last three years (2024–2026), that average has fallen, at about 1.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.