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
-
1.The ratio of ammonia and air taken in Ostwald's process is
- A.10:1
- B.1:10
- C.1:3
- D.3:1
-
2.What is Nitrolim, and how is it formed? Which of the following correctly identifies Nitrolim and the chemical equation for its formation?
- A.Nitrolim is calcium cyanamide (CaNCN), formed by the reaction: CaC₂ + N₂ → CaNCN + C at 1000 °C.
- B.Nitrolim is calcium nitrate (Ca(NO₃)₂), formed by the reaction: CaC₂ + N₂ + O₂ → Ca(NO₃)₂ + C.
- C.Nitrolim is calcium carbide (CaC₂), formed by the reaction: Ca + C → CaC₂ at high temperatures.
- D.Nitrolim is ammonia (NH₃), formed by the reaction: N₂ + H₂ → NH₃ in the presence of a catalyst.
-
3.Describe the reaction of ammonia with excess chlorine. Which of the following correctly represents the balanced equation and the observation for this reaction?
- A.2 NH₃ + 3 Cl₂ → N₂ + 6 HCl; Chlorine's colour fades and a pungent gas is released.
- B.8 NH₃ + 3 Cl₂ → N₂ + 6 NH₄Cl; The yellowish-green colour of chlorine disappears, and white fumes of ammonium chloride form.
- C.NH₃ + Cl₂ → NH₂Cl + HCl; A greenish-yellow precipitate forms.
- D.4 NH₃ + 3 Cl₂ → 2 N₂ + 6 HCl; A brown gas evolves and the solution turns acidic.
-
4.In the formation of ammonia, why is the catalyst chamber equipped with a heat exchanger?
- A.To cool the incoming gases before they enter the catalyst chamber.
- B.To allow the outgoing ammonia and unreacted gases to transfer heat to the incoming nitrogen and hydrogen, maintaining optimal reaction temperature.
- C.To increase the pressure inside the catalyst chamber for better yield.
- D.To remove impurities from the reactant gases before the reaction.
-
5.Name the nitride of a divalent metal that reacts with warm water to liberate ammonia.
- A.Calcium nitride
- B.Magnesium nitride, Mg₃N₂
- C.Aluminum nitride
- D.Sodium nitride
Ready? Take the full 20-question test free — instant marking, no sign-up needed.
▶ Start free mock test