JEE Main 2025 · ChemistryNumerical answerNumerical valueMediumMulti-step

JEE Main 3 April 2025, Shift 1, Chemistry Q73

Question 73 of 75 in this shift, Chemistry question 23 of 25, Section B.

Consider the following reactions

\mathrm{A + NaCl + H_2SO_4 \rightarrow CrO_2Cl_2 + Side\ Products}

(A: little amount)

\mathrm{CrO_2Cl_2}

(Vapour)

+ \mathrm{NaOH} \rightarrow \mathrm{B + NaCl + H_2O}

\mathrm{B + H^+ \rightarrow C + H_2O}

The number of terminal 'O' present in the compound 'C' is ______.

Official answer

NTA final key.

Chapter: The d- and f-Block Elements
Topic: d-Block Elements
Idea tested: Chromyl Chloride Test

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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.