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.

Sample questions

1. 1.... reacts with water to produce ammonia.
   • A.$\mathrm{Mg}_3\mathrm{N}_2$
   • B.$\mathrm{NH}_4\mathrm{OH}$
   • C.$\mathrm{AgNO}_3$
   • D.$\mathrm{MgCl}_2$
2. 2.What do you observe when water is added to the product formed when aluminium is burnt in a jar of nitrogen gas?
   • A.A colourless gas with a pungent smell is produced, turning moist red litmus blue and forming dense white fumes with HCl.
   • B.A brown precipitate forms immediately, and the solution turns alkaline without any gas evolution.
   • C.A yellow gas is released, which has a rotten egg smell and turns lead acetate paper black.
   • D.No visible reaction occurs, but the solution becomes slightly acidic and turns blue litmus red.
3. 3.Which of the following correctly describes the physical and chemical properties of nitrogen?
   • A.Nitrogen is a colorless, odorless gas that is highly soluble in water and supports combustion.
   • B.Nitrogen is a colorless, odorless, and tasteless gas that is chemically inert at ordinary temperatures due to its triple covalent bond and does not support combustion.
   • C.Nitrogen is a reactive gas with a pungent odor, turns litmus red, and readily dissolves in water.
   • D.Nitrogen is a yellowish gas that is highly combustible and reacts vigorously with all metals at room temperature.
4. 4.Which equation correctly represents the catalytic oxidation of ammonia in the presence of platinum?
   • A.4NH₃ + 3O₂ → 2N₂ + 6H₂O + Heat
   • B.4NH₃ + 5O₂ → 4NO + 6H₂O + Heat
   • C.NH₃ + O₂ → NO + H₂O
   • D.2NH₃ + 2O₂ → N₂O + 3H₂O + Heat
5. 5.Ammonia turns yellow turmeric solution ...
   • A.Orange
   • B.brown
   • C.red
   • D.blue