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Chemistry - Chemical Kinetics

Practise 107 NTA Abhyas (JEE Main) questions on Chemical Kinetics. Each question shows a quick preview so you can jump straight to the topic you want to revise.

Chemical Kinetics has been asked in 0 of the 24 years of NTA Abhyas (JEE Main) papers analysed (2002–2025), with 107 questions in all. 100% of them were easy, 0% moderate and 0% tough. Most of its questions came from 2025, with 0 questions that year. In the last three years (2023–2025) it had 0 questions across 63 papers, about 0 per paper.

All of the chapter's questions come from a single topic, Uncategorized.

  1. 1During the nuclear explosion, one of the products is 90 Sr with half life of 6 .93 years. If 1 μ g of 90 Sr was absorbed in the bones of a n
  2. 2Consider the following gaseous reaction where initial pressure of A(g) is 200 torr A(g) → 3B(g) + C(g) After time t, the pressure of system
  3. 3The decomposition of NH 3 on platinum surface is zero order reaction. What are the rates of production of N 2 and H 2 if k = 2.5 × 10 –4 mol
  4. 4A reaction between substance A and B is represented as A + B → C Observations on the rate of this reaction are obtained as Order of reaction
  5. 5For the reaction, A + B → P , - d A d t = - d B d t = k A B and R t = 1 A 0 - B 0 ln ⁡ A B 0 B A 0 when A 0 ≠ B 0 If A 0 = B 0 then the inte
  6. 6Arrhenius equation k = A e - E a / R T If the activation energy of the reaction is found to be equal to RT, then [given : 1 e = 0 . 3679 ]
  7. 7Four thousand active nuclei of a radioactive material are present at t = 0. After 60 minutes 500 active nuclei are left in the sample. The d
  8. 8For the equilibrium, A g ⇌ B g , ∆ H is - 40 kJ/mol. If the ratio of the activation energies of the forward E f and reverse E b reactions is
  9. 9For a first order reaction A → P , the temperature (T) dependent rate constant k was found to follow the equation log ⁡ k = - 2000 1 T + 6.0
  10. 10Half life of a First order reaction is 45 minutes. How long does it need to complete 99.9% of the reaction?
  11. 11The given plots represent the variation of the concentration of a reaction R with time for two different reaction (i) and (ii). The respecti
  12. 12Mechanism of a hypothetical reaction X 2 + Y 2 → 2XY is given below ( 1 ) X 2 → X + X (fast) ( 2 ) X + Y 2 ⇌ XY + Y (slow) ( 3 ) X + Y → XY
  13. 13The half-life period for catalytic decomposition of AB 3 at 50 mm is found to be 4 hrs and at 100 mm it is 2 hrs. The order of the reaction
  14. 14For reactions P → Q and X → Y Arrhenius constants are 1 0 6 and 1 0 8 respectively. If E P → Q = 1500 c a l / m o l e and E x → y = 2000 c a
  15. 15A graph plotted between t 1 2 vs. log concentration is a straight line. What conclusion can you draw from the given graph
  16. 16A graph plotted between log k versus 1/T for calculating activation energy is shown by
  17. 1784 P o 210 decays with a particle to 82 P b 206 with a half-life of 138.4 days. If 1.0 g of 84 P o 210 is placed in a sealed tube, how much
  18. 18For a second order reaction, 2 A → Products, a plot of log t 1 / 2 vs log a (where, 'a' is initial concentration) will give an intercept equ
  19. 19Which of the following is/are correct for the first order reaction? (a is initial concentration of reactant, x is concentration of the react
  20. 20In a first order reaction, the concentration of the reactant, decreases from 0.8 M to 0.4 M in 15 m i n u t e s . The time taken for the con
  21. 21For the first order reaction given below select the set having correct statements 2 N 2 O 5 g → 4N O 2 g + O 2 g (1) the concentration of th
  22. 22A certain reaction A → B follows the given concentration (molarity)-time graph. Which of the following statement is true?
  23. 23For a first order reaction, if the time taken for completion of 50% of the reaction is 't' second, the time required for completion of 99.9%
  24. 24The rate constant, the activation energy and the Arrhenius parameter of a chemical reaction at 25°C are 3.0 × 1 0 - 4 s - , 104.4 kJ m o l -
  25. 25A graph plotted between log ⁡ t 50 vs log concentration is a straight line. What conclusion can you draw from the given graph? [Given: n = o
  26. 26A reaction is first order in A and second order in B : How is the rate affected when the concentrations of both A and B are doubled ?
  27. 27Consider the following plots of rate constant versus 1 T for four different reactions. which of the following orders is correct for the acti
  28. 28The rate of decomposition for methyl nitrite and ethyl nitrite can be given in terms of rate constant k 1 and k 2 respectively. The energy o
  29. 29For a first order reaction, the half-life is 10 mins . How much time in minutes will it take to reduce the concentration of reactant to 25 %
  30. 30At 380 ° C , the half life period for the first order decomposition of H 2 O 2 is 360 m i n . The energy of activation of the reaction is 20
  31. 31The gas phase decomposition of dimethylether follows first order kinetics C H 3 - O - C H 3 g → C H 4 g + H 2 g + C O g The reaction is carr
  32. 32When a plot between logk and 1/T is plotted we get the graph as shown. What is the value of slope in the graph?
  33. 33Two substances A t 1 2 = 5 m i n and B t 1 2 = 15 m i n follow first order kinetics, are taken in such a way that initially A = 4 B . The ti
  34. 34A and B react as per the reaction A g + 2 B g → C g From the data given below identify the rate law. S .No . A M B M Rate of reaction M sec
  35. 35At the point of intersection of the two curves shown, the conc. of B is given by………for, A → n B
  36. 36The radioactive isotope 90 234 Th undergoes two successive β - decay followed by α decay. The atomic number and the mass number respectively
  37. 37Two first order reactions proceed at 25 o C at the same rate temperature. Coefficient of the rate of the first reaction is 2 and that of sec
  38. 38The reaction of ozone with oxygen atoms in the presence of chlorine atoms can occur by a two step process shown below: O 3 g + Cl • → O 2 g
  39. 39Consider two reactions having same Arrhenius factor A, but different energy of activation. (i) A → B ; E a 1 = 20 kJ (ii) C → D ; E a 2 = 30
  40. 40For the reaction 2 N 2 O 5 → 4 N O 2 + O 2 , rate and rate constant are 1.02 × 10 – 4 mol lit – 1 sec – 1 ⁡ and 3.4 × 10 – 5 sec – 1 ⁡ respe
  41. 41The rate of reaction is doubled for every 10 o C rise in temperature. The increase in rate as result of an increase in temperature from 10 o
  42. 42The following data were obtained during the first order thermal decomposition of S O 2 C l 2 at a constant volume. S O 2 C l 2 g → S O 2 g +
  43. 43In the reaction x A → y B , log ⁡ - d [ A ] d t = log ⁡ + d [ B ] d t + 0.3 Then, x : y is
  44. 44Consider the reaction A → 2 B + C, Δ H = - 1 5 kcal . The energy of activation of backward reaction is 20 kcal mol -1 . In presence of catal
  45. 45Z M A g → Z - 4 M - 8 B g + ( α -particles) ( α - particles are helium nuclei, so will form helium gas by trapping electron(s)). The radioac
  46. 46If 400 gm radioactive Iodine is taken initially. Then calculate the amount of 53 I 128 t 1 2 = 25 min left after 75 minutes
  47. 47Find the rate law that corresponds to the data shown for the following reaction? Experiment Al 0 = M [ B ] 0 = M Initial rate 1 0 . 012 0 .
  48. 48The energy of activation for a reaction is 100 kJ mo l - 1 . Presence of a catalyst lowers the activation energy by 75%. What will be effect
  49. 49A new radionucleide is obtained from the radionucleide 90 234 T h through two successive β -decays followed by one α -decay. The atomic numb
  50. 502 N 2 O 5 ( g ) → 4 NO 2 ( g ) + O 2 ( g ) What is the ratio of the rate of decomposition of N 2 O 5 to rate of formation of O 2 ?

Frequently Asked Questions

1.How many questions are available for Chemical Kinetics?

This chapter includes 107 NTA Abhyas (JEE Main) questions.

2.Are these questions only from NTA Abhyas (JEE Main), or from other exams too?

These are NTA Abhyas (JEE Main) questions specifically for the Chemical Kinetics chapter. Questions from other exams like JEE Main or JEE Advanced are organised separately under their respective exam sections.

3.What is the difficulty level of Chemical Kinetics questions in NTA Abhyas (JEE Main)?

Of the 107 questions analysed for this chapter, 100% are easy, 0% moderate and 0% tough. 2025 had the most, with 0 questions.

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

All of this chapter's questions come from a single topic: Uncategorized.