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Chapter 8 of 11
Syllabus

Study of Compounds

ICSE · Class 10 · Chemistry

Complete topic list for Study of Compounds in ICSE Class 10 Chemistry. Key concepts, sub-topics, and what to focus on for board exams.

44 questions24 flashcards5 concepts

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A labeled diagram showing the apparatus setup for the laboratory preparation of hydrogen chloride gas from sodium chloride and concentrated sulfuric acid, including a round-bottomed flask, thistle fun
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4 Topics · ICSE Class 10 Chemistry

Topics in Study of Compounds

1

Hydrogen Chloride Gas and Hydrochloric Acid

  • HCl gas is prepared by heating NaCl with conc. H₂SO₄ at <200°C
  • HCl gas is colourless, pungent smelling, and 1.27 times heavier than air
  • Highly soluble in water (452 volumes in 1 volume of water)
2

Ammonia (NH₃)

  • Lab preparation: NH₄Cl + Ca(OH)₂ → CaCl₂ + 2H₂O + 2NH₃
  • Alternative: Metal nitrides + warm water (Mg₃N₂ + 6H₂O → 3Mg(OH)₂ + 2NH₃)
  • Haber's process: N₂ + 3H₂ ⇌ 2NH₃ (450-500°C, 200-900 atm, Fe catalyst)
3

Nitric Acid (HNO₃)

  • Lab preparation: KNO₃ + H₂SO₄ → KHSO₄ + HNO₃ (150-200°C)
  • Ostwald's process: NH₃ → NO → NO₂ → HNO₃ (3-step industrial method)
  • Pure HNO₃ is colourless, commercial acid is yellowish due to dissolved NO₂
4

Sulphuric Acid (H₂SO₄)

  • Contact Process: S → SO₂ → SO₃ → H₂SO₄ (industrial method)
  • Key reaction: 2SO₂ + O₂ ⇌ 2SO₃ (V₂O₅ catalyst, 400-450°C)
  • Colourless, dense, oily liquid (sp. gr. 1.84), highly corrosive

Key Concepts

HCl gas is prepared by heatingAmmonia is prepared in laboratory byNitric acid is prepared in laboratorySulphuric acid is manufactured by ContactThree major industrial processes are covered

Frequently Asked Questions

What are the important topics in Study of Compounds for ICSE Class 10 Chemistry?
Study of Compounds covers several key topics that are frequently asked in ICSE Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Study of Compounds — ICSE Class 10 Chemistry?
Understand the core concepts first, then work through the 44 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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