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Pollution

ICSE · Class 10 · Biology

Complete topic list for Pollution in ICSE Class 10 Biology. Key concepts, sub-topics, and what to focus on for board exams.

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4 Topics · ICSE Class 10 Biology

Topics in Pollution

1

Introduction to Pollution

  • Environmental pollution is a large change in environmental quality that adversely affects plant and animal life
  • Pollutants are substances that cause pollution when added to the environment
  • Polluters are agencies or installations that release pollutants (factories, vehicles, power stations)
2

Air Pollution

  • Undesirable change in physical or biological characteristics of air affecting living organisms
  • Main sources: Combustion (vehicles, industries), industrial emissions, pesticide spraying, suspended particulate matter
  • Major pollutants: CO₂, CO, SO₂, NO, hydrocarbons, CFCs, radioactive materials
3

Water Pollution

  • Introduction of foreign material into natural water reducing aquatic life diversity
  • Sources: Domestic wastes, industrial effluents, agricultural runoff, mining wastes, sewage
  • BOD (Biochemical Oxygen Demand) measures pollution extent - oxygen needed to oxidize organic matter
4

Soil Pollution

  • Contamination of soil by harmful substances affecting its fertility and structure
  • Sources: Industrial wastes (salts, metals, chemicals), agricultural chemicals, farm animal wastes, household wastes
  • Effects: Soil erosion, reduced fertility, destruction of soil microorganisms, biomagnification through food chain

Key Concepts

Environmental pollution is defined asPollutants are classified intoAir pollution involves the contaminationWater pollution occurs when harmful substancesSoil pollution involves contamination of soil

Frequently Asked Questions

What are the important topics in Pollution for ICSE Class 10 Biology?
Pollution 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 Pollution — ICSE Class 10 Biology?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision 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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