JEE Chemistry
Bohr Model & Hydrogen Spectrum: JEE Questions & Solutions
25 previous-year JEE Chemistry questions on Bohr Model & Hydrogen Spectrum, each with a worked step-by-step solution.
Intermediate
Previous-year questions
- 01Given below are two statements: Statement I: When an electric discharge is passed through gaseous hydrogen, the hydrogen molecules…MCQMediumJEE 2026
- 02Consider the following spectral lines for atomic hydrogen: A. First line of Paschen series B. Second line of Balmer series C. Third line of…MCQMediumJEE 2026
- 03The energy required by electrons, present in the first Bohr orbit of a hydrogen atom, to be excited to the second Bohr orbit is J mol⁻¹.…MCQEasyJEE 2026
- 04The energy of first (lowest) Balmer line of H atom is x J. The energy (in J) of second Balmer line of H atom is:MCQEasyJEE 2026
- 05Which of the following statements regarding the energy of the stationary state is true in the following one-electron systems ?MCQEasyJEE 2026
- 06The hydrogen spectrum consists of several spectral lines in Lyman series (L₁, L₂, L₃ \dots; L₁ has lowest energy among Lyman series).…NVAEasyJEE 2026
- 07The wavelength of spectral line obtained in the spectrum of Li²⁺ ion, when the transition takes place between two levels whose sum is 4 and…MCQEasyJEE 2026
- 08The wave numbers of three spectral lines of hydrogen atom are considered. Identify the set of spectral lines belonging to the Balmer…MCQEasyJEE 2026
- 09Radius of the first excited state of Helium ion is given as: a₀ = radius of first stationary state of hydrogen atom.MCQEasyJEE 2025
- 10Heat treatment of muscular pain involves radiation of wavelength of about 900 nm. Which spectral line of H atom is suitable for this?…MCQEasyJEE 2025
- 11Given below are two statements about X-ray spectra of elements: Statement (I): A plot of √ν (ν = frequency of X-rays emitted) vs atomic…MCQEasyJEE 2025
- 12For hydrogen atom, the orbital/s with lowest energy is/are:MCQEasyJEE 2025
- 13According to Bohr's model of hydrogen atom, which of the following statement is incorrect?MCQEasyJEE 2025
- 14Which of the following postulate of Bohr's model of hydrogen atom in not in agreement with quantum mechanical model of an atom ?MCQEasyJEE 2025
- 15The energy of an electron in first Bohr orbit of H-atom is -13.6 eV. The magnitude of energy value of electron in the first excited state…NVAEasyJEE 2025
- 16Match List I with List II: List I (Spectral Series for Hydrogen) | List II (Spectral Region) A. Lyman | I. Infrared region B. Balmer | II.…MCQEasyJEE 2024
- 17Given below are two statements: Statement-I: The orbitals having the same energy are called as degenerate orbitals. Statement-II: In…MCQEasyJEE 2024
- 18Number of spectral lines obtained in He⁺ spectra, when an electron makes a transition from the fifth excited state to the first excited…MCQEasyJEE 2024
- 19The radius of the 2^nd orbit of Li²⁺ is x. The expected radius of the 3^rd orbit of Be³⁺ is:MCQEasyJEE 2023
- 20The shortest wavelength of hydrogen atom in the Lyman series is λ. The longest wavelength in the Balmer series of He⁺ is:MCQMediumJEE 2023
- 21Assume that the radius of the first Bohr orbit of hydrogen atom is 0.6 Å. The radius of the third Bohr orbit of He⁺ is …. picometer…NVAEasyJEE 2023
- 22Which transition in the hydrogen spectrum would have the same wavelength as the Balmer type transition from n = 4 to n = 2 of He⁺ spectrum?MCQMediumJEE 2023
- 23The number of the following statements which is/are incorrect is. (A) Line emission spectra are used to study the electronic structure. (B)…NVAEasyJEE 2023
- 24The electron in the nth orbit of Li²⁺ is excited to (n + 1)th orbit using the radiation of energy 1.47 × 10⁻¹⁷ J. The value of n is. %…NVAEasyJEE 2023
- 25Given below are two statements: Statement I: According to Bohr’s model of hydrogen atom, the angular momentum of an electron in a given…MCQEasyJEE 2023
Frequently asked questions
Our bank has 25 previous-year JEE Chemistry questions tagged to Bohr Model & Hydrogen Spectrum, drawn from JEE papers between 2023 and 2026, including 8 from 2026 alone. Each comes with a full step-by-step solution.
Bohr Model & Hydrogen Spectrum is rated Intermediate overall for JEE Chemistry. The PYQs on this page break down as 21 easy, 4 medium.
Of the 25 previous-year questions on Bohr Model & Hydrogen Spectrum, 20 are multiple-choice (MCQ) and 5 are numerical-value (NVA) questions.
Based on recent paper analysis, Bohr Model & Hydrogen Spectrum is worth about 2 marks in JEE Main. It sits in Atomic Structure, a Class 11 Chemistry chapter.
More Atomic Structure topics
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