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.What happens when nitrogen reacts with burning metals such as magnesium, calcium, and aluminium? Select the correct description and chemical equations for these reactions.
- A.Nitrogen reacts with these metals to form metal nitrides: $$3\text{Mg} + \text{N}_2 \rightarrow \text{Mg}_3\text{N}_2$$, $$3\text{Ca} + \text{N}_2 \rightarrow \text{Ca}_3\text{N}_2$$, $$2\text{Al} + \text{N}_2 \rightarrow 2\text{AlN}$$
- B.Nitrogen reacts with these metals to form metal oxides: $$2\text{Mg} + \text{N}_2 \rightarrow 2\text{MgO}$$, $$2\text{Ca} + \text{N}_2 \rightarrow 2\text{CaO}$$, $$4\text{Al} + 3\text{N}_2 \rightarrow 2\text{Al}_2\text{O}_3$$
- C.Nitrogen does not react with these metals; instead, it forms ammonia directly: $$\text{N}_2 + 3\text{H}_2 \rightarrow 2\text{NH}_3$$
- D.Nitrogen reacts with these metals to form metal hydrides: $$\text{Mg} + \text{N}_2 \rightarrow \text{MgH}_2$$, $$\text{Ca} + \text{N}_2 \rightarrow \text{CaH}_2$$, $$2\text{Al} + 3\text{N}_2 \rightarrow 2\text{AlH}_3$$
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2.Which compound is normally used as a drying agent for ammonia?
- A.Concentrated sulfuric acid
- B.Quicklime
- C.Anhydrous calcium chloride
- D.Silica gel
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3.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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4.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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5.What is the product formed when excess chlorine gas reacts with ammonia gas?
- A.Nitrogen gas and hydrochloric acid
- B.A yellow explosive liquid (nitrogen trichloride)
- C.Ammonium chloride and chlorine gas
- D.Nitric oxide and water
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