JEE Main 2021 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 25 July 2021, Shift 2, Chemistry Q57

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

For a chemical reaction

\mathrm{A \rightarrow B}

, it was found that concentration of B is increased by 0.2

\mathrm{mol\ L^{-1}}

in 30 min. The average rate of the reaction is ________

\times 10^{-1}

\mathrm{mol\ L^{-1}\ h^{-1}}

. (in nearest integer)

Official answer

NTA final key.

Chapter: Chemical Kinetics
Topic: Rate Laws
Idea tested: Reaction Rate Definition

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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.