NEET UG 2021 · Chemistry · Question 72
NEET 2021 Chemistry, question 72
Question 72 of the NEET 2021 paper (code O1) is a Chemistry question from Hydrogen. Its idea, Isotopes of Hydrogen, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 3.
Updated 2026-10-08
Q72 · Chemistry
Tritium, a radioactive isotope of hydrogen, emits which of the following particles ?
- 1Gamma ()
- 2Neutron (n)
- 3Beta ()Official answer
- 4Alpha ()
Official answer: option 3 · NTA final answer key
Same idea
The only question on Isotopes of Hydrogen
No other NEET paper from 2017–2026 tested this exact idea.
The chapter
Hydrogen in ten years of NEET
6 questions from 2017–2026, asked in 6 of 10 papers, about 0.6 a paper. Hydrogen and Water alone had 6.