The "Structure of Atom" is a fundamental chapter in Class 11 Chemistry that bridges the gap between classical physics and quantum mechanics. For CBSE Board exams, this chapter is crucial as it forms the basis for understanding chemical bonding, the periodic table, and molecular geometry. Mastery of topics like Bohr’s model, dual nature of matter, and quantum numbers is essential for scoring high marks and developing a strong foundation for competitive exams like JEE and NEET.
This practice quiz is meticulously designed following the latest NCERT syllabus and CBSE 2024-25 exam pattern. It includes a variety of questions ranging from basic conceptual understanding of subatomic particles to complex numerical problems involving the Heisenberg Uncertainty Principle and Schrödinger wave equations. By solving these 30 high-quality MCQs, students can evaluate their preparation levels and gain clarity on the intricate details of electronic configurations and orbital shapes.
40
Minutes
30
Questions
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Marking Scheme
Q1. Which of the following statements about the electron is incorrect?
Q2. The number of protons, electrons and neutrons in are respectively:
Q3. Which of the following series of transitions in the spectrum of hydrogen atom falls in the visible region?
Q4. The energy of a photon is given by . If the wavelength is doubled, the energy will:
Q5. What is the maximum number of electrons that can be accommodated in a shell with principal quantum number ?
Q6. The radius of the Bohr orbit for a hydrogen atom is given by:
Q7. Which quantum number defines the three-dimensional shape of the orbital?
Q8. For , the possible values of are:
Q9. The uncertainty in momentum of an electron is kg m/s. The uncertainty in its position () will be: ( J s)
Q10. Which of the following orbitals has two spherical (radial) nodes?
...and 20 more questions.