Water Pollution
Telangana Open School (TOSS) · Class 12 · Chemistry
Step-by-step guide to study Water Pollution in Telangana Open School (TOSS) Class 12 Chemistry. Topics to cover, practice strategy, and time allocation.
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Study Plan
Learn the Theory
Read the textbook chapter carefully. Note down definitions, formulas, and key concepts.
Practice Problems
Solve textbook exercises and additional practice questions. There are 53 questions available for this chapter.
Revise & Test
Revise key formulas and concepts without looking at notes. Take a practice quiz to test your understanding. Mark weak areas for re-revision.
Spaced Revision
Revisit Water Pollution after a week. Use flashcards for quick recall. Solve previous year questions from this chapter.
What to Focus On
- Only 3% of Earth's water is freshwater.
- Surface water comes from precipitation and runs into rivers and lakes.
- Groundwater is stored in aquifers and is accessed through wells and springs.
- Water pollution is defined as contamination harmful to living beings.
- Physical parameters include colour, odour, and turbidity.
- Chemical parameters include nitrates, phosphates, and heavy metals.
- Point sources are specific and direct; non-point sources are scattered and indirect.
- Natural pollution includes silt and natural radionuclides.
- Human activities are the main cause of modern water pollution.
Common Mistakes to Avoid
All water pollution is visible — if water looks clean, it's safe to drink.
Eutrophication is caused only by industrial waste.
Biological Oxygen Demand (BOD) measures the oxygen produced by aquatic plants.
Memory Tips
Definition of water pollution
Three types of water pollution parameters: Physical, Chemical, Biological
Point vs Non-point sources of pollution
Natural vs Anthropogenic sources
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Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Water Pollution
Practice Quiz
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Important Questions
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Revision Notes
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Formula Sheet
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Chapter Summary
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Concept Maps
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Flashcards
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Syllabus
What topics to cover
NCERT Solutions
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Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for Telangana Open School (TOSS) Class 12 Chemistry.