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Friday, 9 October

NEET UG 2021 · Chemistry · Question 98

NEET 2021 Chemistry, question 98

Question 98 of the NEET 2021 paper (code O1) is a Chemistry question from Chemical Kinetics. Its idea, Arrhenius Plot Interpretation, was asked 3 times, in 2021, 2024 and 2026, across NEET 2017–2026. The NTA final answer key gives option 3.

Updated 2026-10-08

Q98 · Chemistry

The slope of Arrhenius Plot (ln⁡k v/s 1T)\left(\ln k \text{ v/s } \frac{1}{T}\right) of first order reaction is −5×103-5\times10^{3} K. The value of EaE_a of the reaction is. Choose the correct option for your answer.

[Given R = 8.314 JK−1mol−1\mathrm{JK^{-1}mol^{-1}}]

  1. 1166 kJ mol−1\mathrm{mol^{-1}}
  2. 2−83 kJ mol−1\mathrm{mol^{-1}}
  3. 341.5 kJ mol−1\mathrm{mol^{-1}}Official answer
  4. 483.0 kJ mol−1\mathrm{mol^{-1}}

Official answer: option 3 · NTA final answer key

Same idea

Arrhenius Plot Interpretation, in other papers

NEET asked this idea 3 times, in 2021, 2024 and 2026. The other 2 questions below.

  • 2026 Q64For an elementary chemical reaction, the Arrhenius plot is given below. If the energy of activation is 6.64 kJ mol−1^{-1} and R = 8.3 J…Figure-based · Medium
  • 2024 Q55Which plot of ln k vs 1T\frac{1}{T} is consistent with Arrhenius equation?Figure-based · Easy

Arrhenius Plot Interpretation: every question and how it was framed

The chapter

Chemical Kinetics in ten years of NEET

21 questions from 2017–2026, asked in 10 of 10 papers, about 2.0 a paper. Chemical Kinetics alone had 21.

Chapter analysisStudy this chapterPractise this chapter

Chemical Kinetics: questions per paper

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