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← JEE Main 2026 · 6 Apr · Shift 1
ChemistryInteger+4 / -1Question 74 of 75

JEE Main 2026 · 6 Apr · Shift 1, Chemistry question 74

Sucrose hydrolyses in acidic medium into glucose and fructose by first order rate law with t1/2=3t_{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)

Answer and worked solution

Official answer: 25

Half-lives. 6 h is two half-lives of 3 h, so (12)2=25%\left(\tfrac12\right)^2=25\% remains.

Answer: 25

Topics:Half-life