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.What is a reducing agent and which of the following pairs correctly represents two examples of gaseous reducing agents?
- A.A substance that reduces other substances by providing electrons or hydrogen; hydrogen sulphide and carbon monoxide
- B.A substance that oxidizes other substances by removing electrons; chlorine and oxygen
- C.A substance that reduces other substances by absorbing hydrogen; nitrogen and helium
- D.A substance that increases the oxidation state of other substances; hydrogen and sulphur dioxide
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2.Which term is used for a liquid or solution that conducts electricity and undergoes chemical decomposition during the process?
- A.Conductor
- B.Electrolyte
- C.Insulator
- D.Semiconductor
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3.Classify the following substances under three headings: (a) strong electrolytes (b) weak electrolytes (c) non-electrolytes. Acetic acid, ammonium chloride, ammonium hydroxide, carbon tetrachloride, dilute hydrochloric acid, sodium acetate, dilute sulphuric acid.
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4.What is the process called by which impurities from metals are removed electrolytically?
- A.Electroplating
- B.Electrorefining
- C.Galvanisation
- D.Corrosion
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5.Why is the electrolysis of molten lead bromide considered to be a redox reaction?
- A.It involves the simultaneous gain and loss of electrons by lead and bromide ions, respectively.
- B.It produces a metal and a gas without any electron transfer.
- C.It only involves the reduction of lead ions to lead metal.
- D.It occurs at high temperatures without any chemical changes.
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