JEE Main 2026 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 6 April 2026, Shift 1, Chemistry Q74

Question 74 of 75 in this shift, Chemistry question 24 of 25, Section B.

Sucrose hydrolyses in acidic medium into glucose and fructose by first order rate law with

\mathrm{t_{1/2}}=3

hour. The percentage of sucrose remaining after 6 hours is _____. (Nearest integer) (Given :

\log 2=0.3010

and

\log 3=0.4771

)

Official answer

NTA final key.

Chapter: Chemical Kinetics
Topic: Integrated Rate Equations
Idea tested: Concentration After n Half-Lives

Same idea in other shifts

Asked 3× in all

3 Apr 2025, Shift 1 · Q58In a reaction $\mathrm{A} + \mathrm{B} \rightarrow \mathrm{C}$ , initial concentrations of A and B are related as…MediumSingle correct
8 Apr 2025, Shift 2 · Q54In a first order decomposition reaction, the time taken for the decomposition of reactant to one fourth and one eighth of its initial…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 42 of the 174 JEE Main shifts held from 2017 to 2026.