Science & Technology·Prelims Questions

Atomic Structure — Prelims Questions

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Version 1Updated 9 Mar 2026

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Q1easy

Which of the following statements regarding Rutherford's gold foil experiment is INCORRECT?

Q2medium

Consider the following statements about the Bohr model of the atom: 1. It successfully explained the stability of multi-electron atoms. 2. It accounted for the fine structure of spectral lines. 3. It introduced the concept of quantized energy levels for electrons. Which of the statements given above is/are correct?

Q3medium

Which set of quantum numbers (n, l, m_l, m_s) is NOT permissible for an electron in an atom?

Q4easy

Which of the following principles states that no two electrons in an atom can have the same set of all four quantum numbers?

Q5hard

Consider the following applications: 1. Global Positioning System (GPS) 2. Medical Resonance Imaging (MRI) 3. Laser surgery 4. Semiconductor devices Which of the above applications are directly based on the principles of atomic structure?