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.If the empirical formula of two compounds is CH and their vapour densities are 13 and 39 respectively, what are their molecular formulas?
- A.C₂H₂, C₄H₄
- B.C₂H₂, C₆H₆
- C.CH, C₃H₃
- D.C₄H₄, C₆H₆
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2.(c) What would be the volume of steam produced at the same time if measured at 760 mmHg pressure and 273°C?
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3.A compound contains 87.5% by mass of Nitrogen and 12.5% by mass of Hydrogen. Determine the empirical formula of the compound.
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4.The molecular mass of ammonia gas in grams is :
- a.14 g
- b.17 g
- c.27 g
- d.24 g
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5.A silicon chip used in an integrated circuit of a microcomputer has a mass of 5.68 mg. How many silicon (Si) atoms are present in this chip?
- A.1.22 × 10²⁰ atoms
- B.2.44 × 10¹⁹ atoms
- C.1.22 × 10²³ atoms
- D.5.68 × 10²⁰ atoms
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