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Revision Notes
Environmental Pollution and Control Strategies — Revision Notes
ICSE · Class 11 · Environmental Science
Environmental Pollution and Control Strategies revision notes for ICSE Class 11 Environmental Science: 4 topics in quick points.
65 questions40 flashcards5 concepts
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Key Topics to Revise
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1. Core Ideas and Types of Pollution
- Pollution is the undesirable change in the physical, chemical, or biological characteristics of air, water, or land that adversely affects life.
- Major types of pollution are air pollution, water pollution, soil pollution, noise pollution, thermal pollution, and radioactive pollution.
- Air pollution is the contamination of the atmosphere by harmful substances in concentrations that injure living organisms, property, and the environment.
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2. Causes of Air Pollution
- Thermal power plants burning coal release sulphur dioxide, nitrogen oxides, carbon dioxide, and particulate matter.
- Vehicles emit carbon monoxide, hydrocarbons, nitrogen oxides, and fine particulate matter, especially in urban areas.
- Industrial activities release smoke, toxic gases, and chemical vapours.
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3. Human Activities Altering Environmental Cycles
- Human activities such as industrialisation, rapid urban growth, and intensive agriculture disturb natural environmental cycles.
- The hydrological cycle is the continuous movement of water between the Earth's surface, atmosphere, and underground reservoirs.
- Climate change raises evaporation and changes rainfall patterns, causing irregular precipitation, floods, and droughts.
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4. Local and Global Effects of Pollution
- Urban smog is a local example caused by vehicle emissions, industrial discharges, and construction dust.
- Local effects of pollution include smog formation, respiratory diseases, and reduced visibility.
- Global effects of pollution include climate change, ozone depletion, and acid rain.
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Full NotesKey Concepts
Pollution is the undesirable changeAir pollution is the contaminationThermal power plants burn coalIndustrialisationExcess nitrogen and phosphorus in water
Frequently Asked Questions
What are the important topics in Environmental Pollution and Control Strategies for ICSE Class 11 Environmental Science?
Key topics in Environmental Pollution and Control Strategies include Core Ideas and Types of Pollution, Causes of Air Pollution, Human Activities Altering Environmental Cycles, Local and Global Effects of Pollution. Study these first, then practise questions on each for Class 11 exams.
How should I revise Environmental Pollution and Control Strategies for Class 11 exams?
Learn the core ideas first, then work through the 65 practice questions on Environmental Pollution and Control Strategies. Revise 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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