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Saturday, 31 October

JEE Main 2021 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 22 July 2021, Shift 2, Chemistry Q36

Question 36 of 90 in this shift, Chemistry question 6 of 30, Section A.

Isotope(s) of hydrogen which emits low energy β−\beta^- particles with t1/2t_{1/2} value >> 12 years is/are :
  1. (1)Protium
  2. (2)Deuterium
  3. (3)Deuterium and Tritium
  4. (4)TritiumOfficial answer

Official answer

Option 4

NTA final key.

Chapter
Hydrogen
Topic
Hydrogen and Hydrides
Idea tested
Radioactive Decay of Tritium

Same idea in other shifts

Asked 2× in all
  1. 26 Feb 2021, Shift 2 · Q35Which of the following forms of hydrogen emits low energy β−\beta^{-} particles ?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.