JEE Main 2026 — Chemical Kinetics Question with Solution
JEE Main 2026 (06 April Shift 2)
Question
Decomposition of a hydrocarbon follows the equation . The activation energy of reaction is __________ kJ mol. (Nearest Integer) Given : R J K mol
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Show full solutionCorrect answer: 232
Correct answer
232
Step-by-step explanation
According to the Arrhenius equation, .
The given equation is .
Comparing the exponent of in both equations:
Substituting the value of :
Rounding to the nearest integer, the activation energy is .
Answer:
The given equation is .
Comparing the exponent of in both equations:
Substituting the value of :
Rounding to the nearest integer, the activation energy is .
Answer:
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This is a previous-year question from JEE Main 2026, covering the Chemical Kinetics chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.