JEE Main 2023 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 13 April 2023, Shift 1, Chemistry Q87

Question 87 of 90 in this shift, Chemistry question 27 of 30, Section B.

t_{87.5}

is the time required for the reaction to undergo 87.5% completion and

t_{50}

is the time required for the reaction to undergo 50% completion.The relation between

t_{87.5}

and

t_{50}

for a first order reaction is

t_{87.5}

= x \times t_{50}

The value of

x

is ________________.(Nearest integer)

Official answer

NTA final key.

Chapter: Chemical Kinetics
Topic: Integrated Rate Equations
Idea tested: First Order Half-Life

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Asked 6× in all

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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.