JEE Main 2021 — Hydrogen Question with Solution
From: JEE Main 2021 (Online) 31st August Evening Shift
Question
Which one of the following statements is incorrect?
Choose an option
Show full solutionCorrect option: B
Correct answer
BAt around 2000 K, the dissociation of dihydrogen into its atoms is nearly 8.1%
Step-by-step explanation
Atomic hydrogen is produced at high temperature in an electric are or under ultraviolet radiations.
The dissociation of dihydrogen at 2000 K is only 0.081%.
H-H bond dissociation enthalpy is highest for a single bond for any diatomic molecule.
Dihydrogen can be produced on reacting Zn with dil. HCl as well as NaOH (aq.)
The dissociation of dihydrogen at 2000 K is only 0.081%.
H-H bond dissociation enthalpy is highest for a single bond for any diatomic molecule.
Dihydrogen can be produced on reacting Zn with dil. HCl as well as NaOH (aq.)
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Hydrogen 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 2021, covering the Hydrogen 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.