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.An aqueous solution of copper sulphate turns colourless on electrolysis. Which of the following could be the electrodes? P. anode: copper; cathode: copper Q. anode: platinum; cathode: copper R. anode: copper; cathode: platinum
- a.only P
- b.only Q
- c.only R
- d.both Q and R
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2.Aqueous copper (II) sulphate is electrolysed using copper electrodes. Which statement about the electrolysis is not correct?
- a.An oxidation reaction occurs at the positive electrode.
- b.The current is carried through the electrolyte by ions.
- c.The positive electrode loses mass.
- d.The number of copper (II) ions in the electrolyte decreases.
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3.With respect to the electrolysis of copper (II) sulphate solution using copper electrodes, which statement is correct?
- a.Copper metal is deposited at the negative electrode.
- b.Oxygen gas is produced at the positive electrode.
- c.The positive electrode increases in mass.
- d.The negative electrode decreases in mass.
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4.Which term describes the electrolytic deposition of a superior metal on a baser metal?
- A.Electroplating
- B.Electrolysis
- C.Electrorefining
- D.Galvanization
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5.In the Hall-Héroult process for the extraction of aluminium, which of the following correctly describes the electrolyte used, the reactions at the cathode and anode, and the role of cryolite?
- A.The electrolyte is pure alumina; Al³⁺ ions are reduced at the cathode to form aluminium, O²⁻ ions oxidize at the anode to form oxygen, and cryolite increases conductivity.
- B.The electrolyte is a mixture of alumina, cryolite, and fluorspar; Al³⁺ ions gain electrons at the cathode to form aluminium, O²⁻ ions lose electrons at the anode to form oxygen, and cryolite lowers the melting point of alumina.
- C.The electrolyte is molten cryolite; aluminium is produced at the anode, oxygen is released at the cathode, and fluorspar increases the melting point of the mixture.
- D.The electrolyte is a solution of alumina in water; Al³⁺ ions are reduced at the anode, O²⁻ ions oxidize at the cathode, and cryolite acts as a catalyst.
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