ICSE Class 10 Metallurgy — Mock Test (2027)
Free online mock test for Metallurgy (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 Metallurgy 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 the process of roasting, and which of the following correctly represents the chemical equations for the roasting of zinc blende, galena, and iron pyrite?
- A.Heating the ore in the absence of air to remove volatile impurities; ZnS → Zn + S, PbS → Pb + S, FeS₂ → Fe + 2S
- B.Heating the ore in the presence of air to convert sulphide ores into oxides; 2ZnS + 3O₂ → 2ZnO + 2SO₂, 2PbS + 3O₂ → 2PbO + 2SO₂, 4FeS₂ + 11O₂ → 2Fe₂O₃ + 8SO₂
- C.Reducing the ore using carbon to extract the metal; ZnS + C → Zn + CS₂, PbS + C → Pb + CS₂, FeS₂ + 2C → Fe + 2CS₂
- D.Dissolving the ore in acid to form soluble salts; ZnS + 2HCl → ZnCl₂ + H₂S, PbS + 2HCl → PbCl₂ + H₂S, FeS₂ + 2HCl → FeCl₂ + H₂S + S
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2.What do you observe when hydrogen is passed over heated copper oxide?
- A.The black copper oxide turns reddish-brown, and water is formed.
- B.The black copper oxide remains unchanged, and hydrogen gas is released.
- C.The black copper oxide turns white, and oxygen gas is produced.
- D.The black copper oxide decomposes into copper and oxygen gas.
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3.What are the products formed when calamine is heated?
- A.Zn + CO₂
- B.ZnO + CO
- C.ZnO + CO₂
- D.Zn + CO + O₂
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4.Which method is used to separate ore from gangue by preferential wetting?
- A.Magnetic separation
- B.Gravity separation
- C.Froth floatation
- D.Distillation
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5.Describe Baeyer's process for the purification of bauxite. Which of the following correctly represents the chemical equation for the step where aluminium hydroxide is obtained as a precipitate?
- A.Al₂O₃·2H₂O + 2NaOH → 2NaAlO₂ + 3H₂O
- B.NaAlO₂ + 2H₂O → NaOH + Al(OH)₃↓
- C.2Al(OH)₃ → Al₂O₃ + 3H₂O
- D.Al₂O₃ + 2NaOH + 3H₂O → 2NaAl(OH)₄
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