ICSE Class 10 Electrolysis — Mock Test (2027)
Free online mock test for Electrolysis (ICSE Class 10 Chemistry) — 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 Electrolysis 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.Assertion: During the electrolysis of acidified Copper sulphate solution with Copper electrodes, the size of the cathode decreases. Reason: Copper ions from the electrolyte are deposited on the cathode.
- A.Both assertion and reason are true and reason is the correct explanation of assertion.
- B.Both assertion and reason are true, but reason is not the correct explanation of assertion.
- C.Assertion is true, but reason is false.
- D.Assertion is false, but reason is true.
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2.In what physical state must Lead bromide be to undergo electrolysis?
- A.Solid
- B.Aqueous solution
- C.Molten or fused
- D.Gaseous
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3.During the electrolysis of copper sulphate solution, which electrode material ensures that the colour of the electrolyte does not fade?
- A.Graphite
- B.Platinum
- C.Copper
- D.Iron
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4.Why do electrovalent compounds like sodium chloride not conduct electricity in the solid state but do so in molten or aqueous states?
- A.In the solid state, ions are immobile due to strong electrostatic forces, but become free to move in molten or aqueous states.
- B.Solid sodium chloride lacks charged particles, which are only formed when dissolved or melted.
- C.The crystal lattice in solids allows electrons to flow, but this flow is blocked in liquids.
- D.Conductivity depends on temperature; solids are too cold to conduct electricity effectively.
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5.An electrolyte which completely dissociates into ions is :
- A.Alcohol
- B.Carbonic acid
- C.Sucrose
- D.Sodium hydroxide
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