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.Heavy stable nuclei have more neutrons than protons. This is because of the fact that
- a.electrostatic force between protons are repulsive
- b.neutrons decay into protons through beta decay
- c.neutrons are heavier than protons
- d.nuclear forces between neutrons are weaker than that between protons
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2.A thorium isotope ${}^{223}\mathrm{Th}$ undergoes an α-decay and changes into radium. What are the atomic number and mass number of the radium produced?
- A.Atomic number 88, mass number 219
- B.Atomic number 90, mass number 223
- C.Atomic number 86, mass number 215
- D.Atomic number 92, mass number 227
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3.2. In β-emission from a radioactive substance, an electron is ejected. This electron comes from
- A.the outermost orbit of atom
- B.the inner orbits of atom
- C.the surface of substance
- D.the nucleus of atom
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4.During the emission of a beta particle from a radioactive nucleus, which of the following remains the same?
- A.Atomic number
- B.Mass number
- C.Number of neutrons
- D.Number of protons
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5.Why do we usually use isotopes emitting gamma radiations as radioactive tracers in medical science?
- A.Gamma radiations are highly penetrating and can be detected outside the body, making them ideal for medical imaging.
- B.Gamma radiations are non-ionizing and completely safe for all body tissues.
- C.Gamma radiations have the shortest half-life, reducing exposure time for patients.
- D.Gamma radiations are absorbed by bones, making them useful for skeletal imaging only.
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