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Saturday, 31 October

JEE Main 2023 · ChemistryMultiple choiceTwo statementsEasyConceptual

JEE Main 15 April 2023, Shift 1, Chemistry Q62

Question 62 of 90 in this shift, Chemistry question 2 of 30, Section A.

Given below are two statements: Statement I : According to Bohr's model of hydrogen atom, the angular momentum of an electron in a given stationary state is quantised. Statement II : The concept of electron in Bohr's orbit, violates the Heisenberg uncertainty principle. In the light of the above statements, choose the most appropriate answer from the options given below:
  1. (1)Both Statement I and Statement II are correctOfficial answer
  2. (2)Both Statement I and Statement II are incorrect
  3. (3)Statement I is correct but Statement II is incorrect
  4. (4)Statement I is incorrect but Statement II is correct

Official answer

Option 1

NTA final key.

Chapter
Structure of Atom
Topic
Bohr's Atomic Theory
Idea tested
Angular Momentum Quantization

Same idea in other shifts

Asked 3× in all
  1. 27 Aug 2021, Shift 1 · Q51The kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is equal to h2x m a02\frac{h^2}{x\,m\,a_0^2}. The value of 10x10x is…HardNumerical value
  2. 9 Jan 2020, Shift 1 · Q26The de Broglie wavelength of an electron in the 4th4^{\mathrm{th}} Bohr orbit is :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.