ICSE Class 10 Mole Concept and Stoichiometry — Mock Test (2027)
Free online mock test for Mole Concept and Stoichiometry (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 Mole Concept and Stoichiometry 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 organic compound has a vapour density of 94 and contains 12.67% carbon, 2.13% hydrogen, and 85.11% bromine by mass. What is its molecular formula? [Atomic masses: C = 12, H = 1, Br = 80]
- A.CHBr
- B.C₂H₄Br₂
- C.C₃H₆Br₃
- D.CH₂Br
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2.A solution of common salt when added to silver nitrate solution yields a precipitate of silver chloride (0.28 g). Find the mass of sodium chloride in the solution, and also the mass of sodium nitrate formed.
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3.What is the volume at S.T.P. (i) in millilitres of 0.01 mole of Hexane gas (C₆H₁₄)? (ii) in litres of 5 moles of Butane gas (C₄H₁₀)? (iii) in millilitres of 0.2 mole of Benzene gas (C₆H₆)?
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4.Calculate the relative molecular mass of a gas if the mass of 5.6 dm³ of the gas at STP is 12.0 g.
- A.24 a.m.u.
- B.48 a.m.u.
- C.96 a.m.u.
- D.12 a.m.u.
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5.A sample of coal gas contains 45% H₂, 30% CH₄, 20% CO, and 5% C₂H₂ by volume. 100 mL of this gaseous mixture is mixed with 160 mL of oxygen and exploded. Calculate the volume and composition of the resulting mixture when cooled to room temperature and pressure. What is the total volume of the resulting mixture?
- A.115 mL (55 mL O₂ + 60 mL CO₂)
- B.125 mL (65 mL O₂ + 60 mL CO₂)
- C.105 mL (45 mL O₂ + 60 mL CO₂)
- D.140 mL (80 mL O₂ + 60 mL CO₂)
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