ICSE Class 10 Nuclei — Mock Test (2027)
Free online mock test for Nuclei (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 Nuclei 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 energy released (Q value) in the fission of a uranium nucleus is of the order of:
- A.2 MeV
- B.20 MeV
- C.200 MeV
- D.2000 MeV
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2.A heavy nucleus with A = 240 (binding energy per nucleon 7.6 MeV) splits into two equal fragments of A = 120 (binding energy per nucleon 8.5 MeV). The Q-value of this fission is about:
- A.108 MeV
- B.180 MeV
- C.216 MeV
- D.240 MeV
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3.Chlorine has two isotopes of mass 34.98 u and 36.98 u with relative abundances 75.4% and 24.6%. The average atomic mass of chlorine is about:
- A.35.47 u
- B.36.00 u
- C.34.98 u
- D.71.96 u
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4.In the proton-proton cycle in the Sun, the net effect of combining four hydrogen nuclei is the formation of one helium-4 nucleus with a release of about:
- A.0.42 MeV
- B.3.27 MeV
- C.26.7 MeV
- D.200 MeV
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5.Fusion of hydrogen nuclei into helium nuclei is the source of energy of:
- A.Nuclear reactors on Earth
- B.All stars including our Sun
- C.Chemical combustion
- D.Radioactive decay only
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