JEE Main 2023ChemistryHydrogenEasyMCQ

JEE Main 2023 — Hydrogen Question with Solution

JEE Main 2023 (10 Apr Shift 2)

Question

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A : Physical properties of isotopes of hydrogen are different.

Reason R : Mass difference between isotopes of hydrogen is very large.

In the light of the above statements, choose the correct answer from the options given below:

Choose an option

Show full solutionCorrect option: A
Correct answer
ABoth A and R are true and R is the correct explanation of A 

Step-by-step explanation

The isotopes of hydrogen are protium, deuterium, and tritium, which have different physical properties. For example, deuterium has a higher boiling point and a lower vapor pressure than protium, while tritium is radioactive and has a much shorter half-life than the other two isotopes.

The mass difference between the isotopes of hydrogen is indeed significant, with protium having a mass of 1 atomic mass unit (amu), deuterium having a mass of 2 amu, and tritium having a mass of 3 amu.

So Both A and R are true and R is the correct explanation of A.

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About this question

This is a previous-year question from JEE Main 2023, 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.