JEE Main 2023 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 6 April 2023, Shift 2, Chemistry Q74

Question 74 of 90 in this shift, Chemistry question 14 of 30, Section A.

Element not present in Nessler's reagent is

(1)K
(2)Hg
(3)NOfficial answer
(4)I

Official answer

Option 3

NTA final key.

Chapter: Amines
Topic: Cation Analysis
Idea tested: Group 0: Nessler's Reagent Complex Formula

Same idea in other shifts

Asked 2× in all

7 Apr 2025, Shift 1 · Q63When a salt is treated with sodium hydroxide solution it gives gas X. On passing gas X through reagent Y a brown coloured precipitate is…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 108 of the 174 JEE Main shifts held from 2017 to 2026.