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.Which of the following is the balanced chemical equation for the reduction of hot copper(II) oxide to copper using ammonia gas?
- A.3CuO + 2NH₃ → 3Cu + 3H₂O + N₂
- B.CuO + NH₃ → Cu + H₂O + N₂
- C.2CuO + 2NH₃ → 2Cu + 3H₂O + N₂
- D.3CuO + NH₃ → 3Cu + H₂O + NO
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2.Which of the following represents the balanced chemical equation for the reaction when chlorine reacts with excess of ammonia?
- A.NH₃ + Cl₂ → N₂ + NH₄Cl
- B.8NH₃ + 3Cl₂ → N₂↑ + 6NH₄Cl
- C.2NH₃ + 3Cl₂ → N₂↑ + 6HCl
- D.NH₃ + Cl₂ → N₂↑ + HCl
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3.Complete and balance the following chemical equation: $\mathrm{Ca(OH)_2} + \mathrm{NH_4Cl} \rightarrow$
- A.$\mathrm{Ca(OH)_2} + 2 \mathrm{NH_4Cl} \rightarrow \mathrm{CaCl_2} + 2 \mathrm{H_2O} + 2 \mathrm{NH_3}$
- B.$\mathrm{Ca(OH)_2} + \mathrm{NH_4Cl} \rightarrow \mathrm{CaCl_2} + \mathrm{H_2O} + \mathrm{NH_3}$
- C.$2 \mathrm{Ca(OH)_2} + \mathrm{NH_4Cl} \rightarrow 2 \mathrm{CaO} + \mathrm{H_2O} + \mathrm{NH_3} + \mathrm{HCl}$
- D.$\mathrm{Ca(OH)_2} + 2 \mathrm{NH_4Cl} \rightarrow \mathrm{Ca(NH_2)_2} + 2 \mathrm{HCl} + 2 \mathrm{H_2O}$
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4.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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5.Which of the following correctly explains the occurrence of ammonia in nature?
- A.Ammonia occurs only in free state in large quantities in nature.
- B.Ammonia is found in traces in free state and as ammonium salts like ammonium chloride and ammonium sulphate in combined state, and is produced by bacterial decomposition of urea in urine.
- C.Ammonia is exclusively produced in laboratories and does not occur naturally.
- D.Ammonia occurs naturally only as ammonium sulphate and is absent in free state.
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