ICSE Class 10 Ammonia (NH3) — Mock Test (2027)
Free online mock test for Ammonia (NH3) (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 Ammonia (NH3) 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.Study the flow chart given and identify the correct set of balanced equations for the reactions labeled A, B, and C.
- A.(A) Mg₃N₂ + 6H₂O → 3Mg(OH)₂ + 2NH₃, (B) NH₃ + HCl → NH₄Cl, (C) NH₄Cl + NaOH → NaCl + H₂O + NH₃
- B.(A) Mg₃N₂ + 3H₂O → 3MgO + 2NH₃, (B) NH₃ + HCl → NH₄Cl + H₂, (C) NH₄Cl + NaOH → NaCl + NH₃ + H₂O
- C.(A) Mg₃N₂ + 6H₂O → 3Mg(OH)₂ + NH₃, (B) NH₃ + 2HCl → NH₄Cl + H₂, (C) NH₄Cl + NaOH → NaCl + H₂O + 2NH₃
- D.(A) Mg₃N₂ + 4H₂O → 3Mg(OH)₂ + 2NH₃, (B) 2NH₃ + HCl → NH₄Cl + NH₂, (C) NH₄Cl + 2NaOH → NaCl + NaH + H₂O + NH₃
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2.The nitrogen gas used in Haber's process is obtained by the
- A.decomposition of nitrate
- B.fractional distillation of air
- C.decomposition of nitrogen by bacteria
- D.decomposition of nitrite
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3.How can you distinguish between Zn²⁺ and Pb²⁺ ions using ammonium hydroxide solution?
- A.Both form insoluble white precipitates that dissolve in excess NH₄OH.
- B.Zn²⁺ forms a gelatinous white precipitate soluble in excess NH₄OH; Pb²⁺ forms an insoluble chalky white precipitate.
- C.Pb²⁺ forms a blue precipitate soluble in excess NH₄OH; Zn²⁺ forms a green precipitate.
- D.Both ions form soluble complexes with no visible precipitate.
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4.Assertion: Ammonia is not collected over water. Reason: Ammonia is highly soluble in water. (a) Both assertion and reason are true and reason is the correct explanation of assertion. (b) Both assertion and reason are true, but reason is not the correct explanation of assertion. (c) Assertion is true, but reason is false. (d) Assertion is false, but reason is true.
- A.Both assertion and reason are true and reason is the correct explanation of assertion.
- B.Both assertion and reason are true, but reason is not the correct explanation of assertion.
- C.Assertion is true, but reason is false.
- D.Assertion is false, but reason is true.
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5.On passing ammonia gas over heated copper oxide for some time, a reddish-brown residue is left behind. What property of ammonia is demonstrated here?
- a.Basic property
- b.Oxidising property
- c.Reducing property
- d.Acidic property
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