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.Find the empirical formula of a compound containing 17.7% hydrogen and 82.3% nitrogen.
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2.Find the total percentage of Oxygen in Magnesium Nitrate crystals with the formula Mg(NO₃)₂ · 6H₂O. (H = 1, N = 14, O = 16, Mg = 24)
- A.54.7%
- B.66.2%
- C.75%
- D.84.4%
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3.Which of the following correctly defines the term: Mole?
- A.The amount of substance that contains as many particles as there are atoms in 12.000 g of carbon-12.
- B.The mass of one atom of carbon-12, measured in grams.
- C.A unit representing 6.022 × 10²³ grams of any substance.
- D.The volume occupied by one gram of any gaseous substance at STP.
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4.A compound of Sodium, Sulphur, and Oxygen has the following percentage composition: Na = 29.11%, S = 40.51%, O = 30.38%. What is its empirical formula? [Atomic masses: O = 16, Na = 23, S = 32]
- A.NaSO₃
- B.Na₂S₂O₃
- C.Na₂SO₄
- D.NaS₂O₂
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5.(ii) If the vapour density of the compound is 252, what is the molecular formula of the compound?
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