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.An element $P$ disintegrates by α-emission, and the new element undergoes two further β-emissions to form element $Q$. Are $P$ and $Q$ isotopes?
- A.No, they have different atomic numbers.
- B.Yes, they have the same atomic number but different mass numbers.
- C.No, they have the same mass number but different atomic numbers.
- D.Yes, they are identical in all properties.
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2.A radioactive sample is kept at the centre of a large evacuated sphere. How safe is this setup?
- A.Very safe, as all radiations are absorbed by the sphere
- B.Not very safe, as beta and gamma radiations will escape
- C.Safe only if the sphere is made of lead
- D.Safe, as alpha particles are the only concern
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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.Which of the following is an example of nuclear fusion?
- A.Fusion of deuterium ($^{2}_{1}\mathrm{H}$) and tritium ($^{3}_{1}\mathrm{H}$) to form helium ($^{4}_{2}\mathrm{He}$) and a neutron.
- B.Splitting of uranium-235 ($^{235}_{92}\mathrm{U}$) into smaller nuclei and neutrons.
- C.Combustion of hydrogen gas to form water.
- D.Radioactive decay of carbon-14 ($^{14}_{6}\mathrm{C}$) into nitrogen-14 ($^{14}_{7}\mathrm{N}$).
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5.What is meant by radioactivity? Which of the following best describes it and provides two correct examples of radioactive substances?
- A.The process where unstable atoms emit radiation spontaneously; examples: Uranium, Radium.
- B.The emission of light from excited electrons in an atom; examples: Sodium, Potassium.
- C.The breakdown of chemical bonds in a substance; examples: Carbon, Hydrogen.
- D.The absorption of radiation by stable atoms; examples: Gold, Silver.
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