Chapter Exam

Chapter 2: Structure of Atom — Online MCQ Test

Q: Which subatomic particle has a positive charge?

Answer: B. Proton — A proton carries one unit of positive charge. Electrons are negatively charged and neutrons are neutral.

Q: The maximum number of electrons that can be accommodated in the first shell is:

Answer: A. 2 — For the first shell, n = 1, so maximum electrons = 2n^2 = 2.

Q: The Bohr model of the atom successfully explains the spectrum of:

Answer: A. Hydrogen atom — Bohr's model works well for hydrogen-like species, especially the hydrogen atom.

Q: Which of the following is NOT a postulate of Bohr's model?

Answer: C. Electrons can have any energy while revolving — Bohr's model says electron energies are quantized, not continuous, in allowed orbits.

Q: In the hydrogen atom, the energy of an electron in the nth orbit is proportional to:

Answer: C. 1/n2 — For hydrogen, the energy of the electron varies as 1/n2, becoming less negative as n increases.

CHEMISTRY · Grade 11 · CBSE(NCERT)

Practice Chapter 2: Structure of Atom with a free chapter-wise online MCQ test for CBSE(NCERT) Grade 11 CHEMISTRY. This chapter covers: Atomic structure Bohr model Quantum numbers Orbitals Electronic configuration Aufbau principle Hunds rule Pauli exclusion principle De Broglie Dual nature. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 2: Structure of Atom — Important Questions & Answers (FAQ)

Frequently asked questions from CBSE(NCERT) Grade 11 CHEMISTRY — Chapter 2: Structure of Atom, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which subatomic particle has a positive charge?