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Saturday, 31 October

JEE Main 2021 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 17 March 2021, Shift 2, Chemistry Q57

Question 57 of 90 in this shift, Chemistry question 27 of 30, Section B.

The reaction 2A+B2→2AB\mathrm{2A + B_2 \rightarrow 2AB} is an elementary reaction. For a certain quantity of reactants, if the volume of the reaction vessel is reduced by a factor of 3, the rate of the reaction increases by a factor of __________. (Round off to the Nearest Integer).

Official answer

27

NTA final key.

Chapter
Chemical Kinetics
Topic
Rate Laws
Idea tested
Order vs Molecularity

Same idea in other shifts

Asked 2× in all
  1. 3 Sep 2020, Shift 1 · Q26It is true that :EasySingle correct

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.