JEE Main 2023 · ChemistryNumerical answerNumerical valueHardMulti-step

JEE Main 6 April 2023, Shift 1, Chemistry Q89

Question 89 of 90 in this shift, Chemistry question 29 of 30, Section B.

Number of bromo derivatives obtained on treating ethane with excess of

\mathrm{Br_2}

in diffused sunlight is ________

Official answer

NTA final key.

Chapter: Hydrocarbons
Topic: Alkanes and Free Radicals
Idea tested: Halogenation Chain Mechanism

Same idea in other shifts

Asked 2× in all

8 Apr 2026, Shift 2 · Q65n-Butane on monochlorination under photochemical condition gives an optically active compound "P". "P" on further chlorination gives…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.