JEE Main 2023 — D And F Block Elements Question with Solution
From: JEE Main 2023 (Online) 1st February Evening Shift
Question
Which element is not present in Nessler's reagent?
Choose an option
Show full solutionCorrect option: D
Correct answer
DOxygen
Step-by-step explanation
Nessler’s reagent is K2[HgI4]
Therefore, among the options given, oxygen is the only element that is not present in Nessler's reagent.
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the D And F Block Elements chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2023, covering the D And F Block Elements chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.