ICSE Class 10 Atoms — Mock Test (2027)
Free online mock test for Atoms (ICSE Class 10 Physics) — 72 competency-based questions based on the latest CISCE 2027 syllabus, with instant marking. Try the samples below, then take the full test free.
What to expect: This mock test covers key concepts from the Atoms chapter — including application-based and competency-focused questions aligned with how ICSE actually sets the paper.
Tip: Attempt without notes first to identify gaps, then review explanations for any wrong answers. Retake after a few days for best retention.
Sample questions
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1.The distance of closest approach of an alpha-particle to a nucleus is found to be considerably larger than the sum of the radii of the alpha-particle and the gold nucleus. This implies that:
- A.The alpha-particle physically touches the nucleus
- B.The alpha-particle reverses its motion without ever touching the nucleus
- C.The nucleus is larger than the atom
- D.The alpha-particle is captured by the nucleus
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2.A classical atom based on .......... is doomed to collapse.
- A.Thomson's model
- B.Rutherford's model
- C.Both models equally
- D.Neither model
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3.The ground state energy of the hydrogen atom is -13.6 eV. The potential energy of the electron in this state is:
- A.-13.6 eV
- B.+13.6 eV
- C.-27.2 eV
- D.+27.2 eV
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4.The radius of the innermost (n = 1) electron orbit of a hydrogen atom is 5.3 x 10^-11 m. The radius of the n = 2 orbit is:
- A.10.6 x 10^-11 m
- B.21.2 x 10^-11 m
- C.47.7 x 10^-11 m
- D.5.3 x 10^-11 m
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5.Assertion (A): In Bohr's model the electron revolves in stationary orbits without emitting radiation. Reason (R): This contradicts classical electromagnetic theory, which predicts that an accelerating charge must radiate.
- A.Both A and R are true and R is the correct explanation of A
- B.Both A and R are true but R is NOT the correct explanation of A
- C.A is true but R is false
- D.A is false but R is true
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