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Friday, 9 October

NEET UG 2020 · Physics · Question 158

NEET 2020 Physics, question 158

Question 158 of the NEET 2020 paper (code E1) is a Physics question from Nuclei. Its idea, Balancing Nuclear Equations, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 1.

Updated 2026-10-08

Q158 · Physics

When a uranium isotope 92235U^{235}_{92}\mathrm{U} is bombarded with a neutron, it generates 3689Kr^{89}_{36}\mathrm{Kr}, three neutrons and :

  1. 156144Ba^{144}_{56}\mathrm{Ba}Official answer
  2. 24091Zr^{91}_{40}\mathrm{Zr}
  3. 336101Kr^{101}_{36}\mathrm{Kr}
  4. 436103Kr^{103}_{36}\mathrm{Kr}

Official answer: option 1 · NTA final answer key

Same idea

The only question on Balancing Nuclear Equations

No other NEET paper from 2017–2026 tested this exact idea.

Balancing Nuclear Equations: every question and how it was framed

The chapter

Nuclei in ten years of NEET

13 questions from 2017–2026, asked in 9 of 10 papers, about 1.2 a paper. Nuclear Binding Energy alone had 4.

Chapter analysisStudy this chapterPractise this chapter

Nuclei: questions per paper

0241’171’181’192’203’212’221’231’240’251’26