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 is ammonia unionised in the gaseous state but a weak electrolyte in aqueous solution?
- A.In the gaseous state, ammonia molecules do not dissociate, but in water, they fully dissociate into NH₄⁺ and OH⁻ ions.
- B.Ammonia exists as molecules in the gaseous state and reacts with water to form NH₄OH, which partially dissociates into ions in solution.
- C.Ammonia is unionised in water but dissociates completely into ions in the gaseous state due to high energy.
- D.Ammonia remains unionised in both states because it does not react with water or dissociate into ions.
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2.What is the process of formation of ions from molecules called?
- A.Dissociation
- B.Ionisation
- C.Electrolysis
- D.Neutralisation
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3.Based on its composition, pure water is expected to _______ conduct electricity under normal conditions.
- A.always
- B.sometimes
- C.will not
- D.will
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4.(i) During the electrolysis of acidified copper sulphate solution with platinum electrodes the colour of the electrolyte?
- A.remains blue
- B.becomes darker
- C.fades away
- D.first becomes dark and then fades away
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5.What is the term for a thin film of a non-reactive metal deposited over a superior metal?
- A.Galvanisation
- B.Electroplating
- C.Anodising
- D.Corrosion
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