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.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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2.(iv) Which of the following pairs of metals are extracted only by electrolysis?
- A.Na, Pb
- B.Ca, Cu
- C.Na, Ca
- D.Ag, K
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3.Electrolysis is defined as the passage of _______ through a liquid or solution, accompanied by a _______ change.
- A.electrons, physical
- B.electricity, physical
- C.electricity, chemical
- D.electrons, chemical
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4.During ionization metals lose electrons, this change can be called:
- a.Oxidation
- b.Reduction
- c.Redox
- d.Displacement
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5.Why is dilute sulphuric acid preferred to dilute nitric acid for acidification when studying the electrolysis of water?
- A.Dilute sulphuric acid is a strong electrolyte and does not react with electrodes or products, avoiding side reactions.
- B.Dilute sulphuric acid is cheaper and more readily available than dilute nitric acid.
- C.Dilute nitric acid increases the conductivity of water more effectively than sulphuric acid.
- D.Dilute sulphuric acid prevents the formation of hydrogen gas during electrolysis.
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