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Saturday, 31 October

JEE Main 2023 · ChemistryMultiple choiceAssertion–reasonEasyConceptual

JEE Main 10 April 2023, Shift 2, Chemistry Q66

Question 66 of 90 in this shift, Chemistry question 6 of 30, Section A.

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:
  1. (1)Both A and R are true and R is the correct explanation of AOfficial answer
  2. (2)Both A and R are true but R is NOT the correct explanation of A
  3. (3)A is true but R is false
  4. (4)A is false but R is true

Official answer

Option 1

NTA final key.

Chapter
Hydrogen
Topic
Hydrogen and Hydrides
Idea tested
Isotopes of Hydrogen

Same idea in other shifts

Asked 5× in all
  1. 28 Jun 2022, Shift 2 · Q68Hydrogen has three isotopes : protium (1^1H) , deuterium (2^2H or D) and tritium (3^3H or T) . They have nearly same chemical…EasySingle correct
  2. 3 Aug 2021, Shift 2 · Q35Which one of the following statements is incorrect? A. The correct order of increasing first ionization enthalpy is Li < H < F. B. Out of…MediumOther
  3. 27 Aug 2021, Shift 1 · Q37Deuterium resembles hydrogen in properties but :EasySingle correct
  4. 8 Jan 2020, Shift 2 · Q34Hydrogen has three isotopes (A), (B) and (C). If the number of neutron(s) in (A), (B) and (C) respectively, are (x)(x), (y)(y) and (z)(z),…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.