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.Which of the following sets of chemical equations correctly represents the roasting of zinc blende and the calcination of calamine?
- A.Roasting: $2\mathrm{ZnS} + 3\mathrm{O}_2 \xrightarrow{800^\circ \mathrm{C}} 2\mathrm{ZnO} + 2\mathrm{SO}_2$; Calcination: $\mathrm{ZnCO}_3 \xrightarrow{400^\circ \mathrm{C}} \mathrm{ZnO} + \mathrm{CO}_2$
- B.Roasting: $\mathrm{ZnS} + \mathrm{O}_2 \xrightarrow{800^\circ \mathrm{C}} \mathrm{ZnO} + \mathrm{SO}_2$; Calcination: $\mathrm{ZnCO}_3 \xrightarrow{400^\circ \mathrm{C}} \mathrm{Zn} + \mathrm{CO}_2$
- C.Roasting: $2\mathrm{ZnS} + 3\mathrm{O}_2 \xrightarrow{800^\circ \mathrm{C}} 2\mathrm{Zn} + 2\mathrm{SO}_3$; Calcination: $\mathrm{ZnCO}_3 \xrightarrow{400^\circ \mathrm{C}} \mathrm{ZnO} + \mathrm{CO}$
- D.Roasting: $\mathrm{ZnS} + \mathrm{O}_2 \xrightarrow{800^\circ \mathrm{C}} \mathrm{ZnO} + \mathrm{S}$; Calcination: $\mathrm{ZnCO}_3 \xrightarrow{400^\circ \mathrm{C}} \mathrm{ZnO} + \mathrm{CO}_2 + \mathrm{O}_2$
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2.Which of the following equations correctly represents the burning of aluminium in air?
- A.4Al + 3O₂ → 2Al₂O₃
- B.2Al + N₂ → 2AlN
- C.4Al + 3O₂ → 2Al₂O₃; 2Al + N₂ → 2AlN
- D.Al + O₂ → AlO₂
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3.Which of the following sets correctly describes the physical properties of aluminium?
- A.Silvery white, lightweight with high tensile strength, malleable, ductile, good conductor of heat and electricity, high melting and boiling points.
- B.Dark grey, heavy with low tensile strength, brittle, poor conductor of heat and electricity, low melting and boiling points.
- C.Golden yellow, lightweight with moderate tensile strength, malleable but not ductile, poor conductor of electricity, high melting point only.
- D.Silvery white, lightweight with low tensile strength, ductile but not malleable, good conductor of heat only, low melting and boiling points.
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4.Compare roasting and calcination with respect to the following aspects and select the correct set of statements: i) Atmosphere used ii) Type of ores treated iii) By-products formed
- A.i) Roasting in excess air, calcination in absence of air; ii) Roasting for sulphide ores, calcination for carbonate/hydrated ores; iii) Roasting produces SO₂, calcination produces CO₂ or water vapor
- B.i) Roasting in absence of air, calcination in excess air; ii) Roasting for carbonate ores, calcination for sulphide ores; iii) Roasting produces CO₂, calcination produces SO₂
- C.i) Roasting in excess air, calcination in limited air; ii) Roasting for oxide ores, calcination for sulphide ores; iii) Roasting produces water vapor, calcination produces SO₂
- D.i) Roasting in inert atmosphere, calcination in excess air; ii) Roasting for hydrated ores, calcination for carbonate ores; iii) Roasting produces CO₂, calcination produces water vapor
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5.What is an amalgam, and which of the following correctly describes its use with an example?
- A.An amalgam is a mixture of mercury with other metals or alloys, used in dental fillings like silver-tin amalgam.
- B.An amalgam is a compound of mercury and non-metals, used as a disinfectant in medical applications.
- C.An amalgam is a pure form of mercury, used in thermometers due to its high density.
- D.An amalgam is an alloy of iron and mercury, used in industrial coatings for corrosion resistance.
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