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.(ii) The percentage composition of sodium phosphate as determined by analysis is $42.1\%$ sodium, $18.9\%$ phosphorus and $39\%$ oxygen. Find the empirical formula of the compound.
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2.Ammonia may be oxidized to nitrogen monoxide in the presence of a catalyst according to the following equation: $$4NH₃ + 5O₂ \longrightarrow 4NO + 6H₂O$$ If 27 litres of reactants are consumed, what volume of nitrogen monoxide is produced at the same temperature and pressure?
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3.Calculate the mass of (i) 10²² atoms of sulphur. (ii) 0.1 mole of carbon dioxide. [Atomic mass: S = 32, C = 12 and O = 16 and Avogadro's Number = 6 × 10²³]
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4.What is the mass in grams of (i) 2 moles of water? (ii) 0.25 mole of Calcium carbonate? (iii) 0.5 mole of Nitric acid? (iv) 3 moles of Sodium hydroxide? (v) 10 moles of Glucose?
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5.The percentage composition by weight and the molecular weight of some compounds is given below. Find their empirical and molecular formula. (i) C = 92.308%, H = 7.692%, Mol. wt. = 78 (ii) C = 40%, H = 6.67%, O = 53.33%, Mol. wt. = 180 (iii) C = 26.67%, H = 2.22%, O = 71.11%, Mol. wt. = 90 (iv) H = 2.47%, P = 38.25%, O = 59.28%, Mol. wt. = 161.94 (v) Cu = 84.11%, C = 15.89%, Mol. wt. = 151 (vi) K = 24.68%, Mn = 34.81%, O = 40.51%, Mol. wt. = 158 (vii) Ca = 34.48%, Si = 24.14%, O = 41.38%, Mol. wt. = 116 (viii) H = 5.88%, O = 94.12%, Mol. wt. = 34 (ix) P = 49.18%, O = 50.82%, Mol. wt. = 125.94 (x) B = 86.64%, H = 13.36%, Mol. wt. = 112.29 (xi) C = 52.17%, H = 13.04%, O = 34.78%, Mol. wt. = 46 (xii) N = 30.43%, O = 69.57%, Mol. wt. = 92 (xiii) K = 31.85%, Cl = 28.95%, O = 39.20%, Mol. wt. = 122.45 (xiv) C = 40%, H = 6.67%, O = 53.33%, Mol. wt. = 60 (xv) H = 3.078%, P = 47.668%, O = 49.254%, Mol. wt. = 129.24
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