ICSE Class 10 Modern Physics — Mock Test (2027)
Free online mock test for Modern Physics (ICSE Class 10 Physics) — 20 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 Modern Physics 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.How many alpha and beta particles are emitted when a uranium nucleus ²³⁸₉₂U decays to lead ²⁰⁶₈₂Pb?
- A.6 alpha, 4 beta
- B.7 alpha, 5 beta
- C.8 alpha, 6 beta
- D.9 alpha, 7 beta
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2.Which nuclear radiation has the least penetrating power?
- A.Beta particles
- B.Gamma rays
- C.Alpha particles
- D.X-rays
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3.Which of the following best describes free electrons?
- A.Electrons tightly bound to the nucleus of an atom.
- B.Valence electrons dislodged from their orbit, moving freely within the substance.
- C.Electrons that are always found in the outermost shell of an atom.
- D.Electrons that cannot move under any external influence.
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4.Which of the following is NOT an application or effect of alpha particles?
- A.Used to bombard nuclei for transmutation in nuclear reactions.
- B.Cause fluorescence in certain materials when they strike them.
- C.Generate electricity directly in photovoltaic cells.
- D.Destroy living cells and cause biological damage due to their high energy.
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5.What are mirror isobars?
- A.Isobars where the number of protons and neutrons in the nucleus are interchanged, e.g., $^{23}_{11}\mathrm{Na}$ and $^{23}_{12}\mathrm{Mg}$.
- B.Isotopes of the same element with identical mass numbers but different atomic numbers.
- C.Atoms with the same number of neutrons but different numbers of protons.
- D.Elements with identical atomic numbers but different mass numbers, e.g., $^{12}_{6}\mathrm{C}$ and $^{14}_{6}\mathrm{C}$.
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