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 reactions demonstrates the reducing property of ammonia?
- A.NH₃ + HCl → NH₄Cl
- B.8NH₃ + 3Cl₂ → N₂ + 6NH₄Cl
- C.NH₃ + H₂O → NH₄OH
- D.4NH₃ + 5O₂ → 4NO + 6H₂O
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2.Which reaction occurs when ammonia is prepared in the laboratory, and how is the gas dried?
- A.NH₄Cl + NaOH → NaCl + H₂O + NH₃; dried using conc. H₂SO₄.
- B.2NH₄Cl + Ca(OH)₂ → CaCl₂ + 2H₂O + 2NH₃; dried using CaO.
- C.N₂ + 3H₂ → 2NH₃; dried using silica gel.
- D.Mg₃N₂ + 6H₂O → 3Mg(OH)₂ + 2NH₃; dried using P₂O₅.
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3.Which of the following sets of characteristics is used to identify ammonia gas?
- A.Colourless, odourless gas that turns lime water milky and relights a glowing splint.
- B.Sharp characteristic odour; turns moist red litmus blue, moist turmeric paper brown, and phenolphthalein pink; forms dense white fumes with concentrated HCl.
- C.Pungent gas that turns blue litmus red, decolourizes acidified KMnO₄, and forms a yellow precipitate with silver nitrate.
- D.Odourless gas that supports combustion, turns anhydrous CuSO₄ blue, and forms a black precipitate with H₂S.
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4.Complete the following equation: $\mathrm{NH_3} + \mathrm{HCl} \longrightarrow$
- A.$\mathrm{NH_3} + \mathrm{HCl} \longrightarrow \mathrm{NH_4}$
- B.$\mathrm{NH_3} + \mathrm{HCl} \longrightarrow \mathrm{NH_4Cl}$
- C.$\mathrm{NH_3} + \mathrm{HCl} \longrightarrow \mathrm{NCl_3} + \mathrm{H_2}$
- D.$\mathrm{NH_3} + \mathrm{HCl} \longrightarrow \mathrm{N_2} + \mathrm{H_2O}$
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5.Why is ammonium hydroxide commonly used in qualitative analysis? Select the correct justification.
- A.It forms colored precipitates with metal ions.
- B.It neutralizes acids without residue.
- C.It evaporates quickly, leaving no trace.
- D.It dissolves all metal salts completely.
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