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Friday, 9 October

JEE Main 2024 · ChemistryNumerical answerNumerical valueMediumMulti-step

JEE Main 8 April 2024, Shift 1, Chemistry Q85

Question 85 of 90 in this shift, Chemistry question 25 of 30, Section B.

Consider the following reaction A+B→C\mathrm{A + B \rightarrow C} The time taken for A to become 1/4th1/4^{\mathrm{th}} of its initial concentration is twice the time taken to become 1/2 of the same. Also, when the change of concentration of B is plotted against time, the resulting graph gives a straight line with a negative slope and a positive intercept on the concentration axis. The overall order of the reaction is ____________.

Official answer

1

NTA final key.

Chapter
Chemical Kinetics
Topic
Integrated Rate Equations
Idea tested
First Order Fractional Completion Shortcuts

Same topic in other shifts

All Integrated Rate Equations questions
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  6. 5 Apr 2026, Shift 1 · Q57First order gas phase reaction A→B+C\mathrm{A \rightarrow B + C} pip_i = initial pressure of gas A, ptp_t = total pressure of the reaction…MediumSingle 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 42 of the 174 JEE Main shifts held from 2017 to 2026.