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.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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2.Define isotones and identify the correct statement about the neutron count in $^{23}_{11}\mathrm{Na}$ and $^{24}_{12}\mathrm{Mg}$. Which of the following is true?
- A.Isotones are atoms with the same atomic number but different neutron counts. $^{23}_{11}\mathrm{Na}$ and $^{24}_{12}\mathrm{Mg}$ each have 11 neutrons.
- B.Isotones are atoms with different atomic numbers and mass numbers but the same neutron count. $^{23}_{11}\mathrm{Na}$ and $^{24}_{12}\mathrm{Mg}$ each have 12 neutrons.
- C.Isotones are atoms with the same mass number but different neutron counts. $^{23}_{11}\mathrm{Na}$ and $^{24}_{12}\mathrm{Mg}$ each have 23 neutrons.
- D.Isotones are atoms with the same number of protons and neutrons. $^{23}_{11}\mathrm{Na}$ and $^{24}_{12}\mathrm{Mg}$ each have 13 neutrons.
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3.What type of force primarily holds the constituents of a nucleus together?
- A.Electrostatic forces between protons.
- B.Strong attractive nuclear forces between nucleons.
- C.Gravitational forces between neutrons.
- D.Magnetic forces between protons and neutrons.
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4.The half-life of strontium-90 is 29 years. The table gives some information about how the mass of a sample of strontium-90 changes with time.
Complete the table.Mass of strontium-90 in g Time in years 1600 0 ………………… 29 400 ………………… -
5.What are isobars?
- A.Atoms of the same element with different mass numbers but the same atomic number.
- B.Atoms of different elements with the same mass number but different atomic numbers.
- C.Atoms of different elements with the same atomic number but different mass numbers.
- D.Atoms of the same element with the same mass number and atomic number.
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