JEE Main 2022 · ChemistryNumerical answerNumerical valueEasyMulti-step

JEE Main 29 June 2022, Shift 1, Chemistry Q90

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

\mathrm{C_6H_{12}O_6 \xrightarrow{Zymase} A \xrightarrow[\Delta]{NaOI} B + CHI_3}

The number of carbon atoms present in the product B is ____________.

Official answer

NTA final key (2022 Session 1).

Chapter: Alcohols, Phenols and Ethers
Topic: Alcohols and Phenols
Idea tested: Iodoform Test for Specific Alcohols

Same idea in other shifts

Asked 4× in all

3 Apr 2025, Shift 1 · Q68Number of molecules from below which cannot give iodoform reaction is: Ethanol, Isopropyl alcohol, Bromoacetone, 2 $-$ Butanol,…MediumSingle correct
4 Apr 2025, Shift 2 · Q67Which among the following compounds give yellow solid when reacted with NaOI/NaOH ? (A) $\mathrm{CH_3-CH(OH)-C_2H_5}$ (B)…EasyOther
9 Apr 2024, Shift 2 · Q78Which of the following compound can give positive iodoform test when treated with aqueous KOH solution followed by potassium hypoiodite.MediumSingle correctHas a figure

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.