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Acids, Bases and Salts

Maharashtra Board · Class 9 · Science

Complete topic list for Acids, Bases and Salts in Maharashtra Board Class 9 Science. Key concepts, sub-topics, and what to focus on for board exams.

44 questions22 flashcards5 concepts

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4 Topics · Maharashtra Board Class 9 Science

Topics in Acids, Bases and Salts

1

Arrhenius Theory of Acids and Bases

  • Acid: A substance that dissociates in water to give H⁺ ions as the only cation
  • Base: A substance that dissociates in water to give OH⁻ ions as the only anion
  • Examples of acids: HCl, H₂SO₄, HNO₃, CH₃COOH
2

Classification of Acids and Bases

  • Strong acids: HCl, HNO₃, H₂SO₄ - dissociate completely
  • Weak acids: CH₃COOH, H₂CO₃ - dissociate partially
  • Strong bases: NaOH, KOH, Ca(OH)₂ - dissociate completely
3

pH Scale and Concentration

  • pH scale ranges from 0 to 14
  • pH 7 = neutral (pure water)
  • pH < 7 = acidic solution
4

Neutralization Reaction

  • Acid + Base → Salt + Water
  • H⁺ + OH⁻ → H₂O (net ionic equation)
  • pH becomes 7 when equal amounts of strong acid and base react

Key Concepts

Acids are substances that produce H⁺A scale from 0 to 14The reaction between an acidNormal salts (pH = 7) fromWater molecules that are part

Frequently Asked Questions

What are the important topics in Acids, Bases and Salts for Maharashtra Board Class 9 Science?
Acids, Bases and Salts covers several key topics that are frequently asked in Maharashtra Board Class 9 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Acids, Bases and Salts — Maharashtra Board Class 9 Science?
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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