JEE Main 2023 · ChemistryNumerical answerNumerical valueMediumConceptual

JEE Main 12 April 2023, Shift 1, Chemistry Q86

Question 86 of 90 in this shift, Chemistry question 26 of 30, Section B.

The reaction

\mathrm{2NO + Br_2 \rightarrow 2NOBr}

takes places through the mechanism given below:

\mathrm{NO + Br_2 \rightleftharpoons NOBr_2}

(fast)

\mathrm{NOBr_2 + NO \rightarrow 2NOBr}

(slow) The overall order of the reaction is _______.

Official answer

NTA final key.

Chapter: Chemical Kinetics
Topic: Rate Laws
Idea tested: Rate Law from Rate-Determining Step

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.