Learn

Saturday, 31 October

JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyRecall

JEE Main 4 April 2024, Shift 1, Physics Q47

Question 47 of 90 in this shift, Physics question 17 of 30, Section A.

Which of the following nuclear fragments corresponding to nuclear fission between neutron (01n^{1}_{0}\mathrm{n}) and uranium isotope (92235U^{235}_{92}\mathrm{U}) is correct :
  1. (1)51153Sb+4199Nb+3 01n^{153}_{51}\mathrm{Sb} + {}^{99}_{41}\mathrm{Nb} + 3\,{}^{1}_{0}\mathrm{n}
  2. (2)56144Ba+3689Kr+3 01n^{144}_{56}\mathrm{Ba} + {}^{89}_{36}\mathrm{Kr} + 3\,{}^{1}_{0}\mathrm{n}Official answer
  3. (3)56140Xe+3894Sr+3 01n^{140}_{56}\mathrm{Xe} + {}^{94}_{38}\mathrm{Sr} + 3\,{}^{1}_{0}\mathrm{n}
  4. (4)56144Ba+3689Kr+4 01n^{144}_{56}\mathrm{Ba} + {}^{89}_{36}\mathrm{Kr} + 4\,{}^{1}_{0}\mathrm{n}

Official answer

Option 2

NTA final key.

Chapter
Nuclei

Same idea in other shifts

Asked 2× in all
  1. 8 Apr 2024, Shift 2 · Q48In a hypothetical fission reaction 92X236→56Y141+36Z92+3R{}_{92}X^{236} \rightarrow {}_{56}Y^{141} + {}_{36}Z^{92} + 3\mathbf{R} The identity of emitted…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.