Class 8 18. Pollution of Air and Water Chapter Review: NCERT Book Solutions
Class 8 chapter 18. Pollution of Air and Water Important key points for quick revision for board exams, ssc and upsc exams preparaion.
NCERT Solutions
All chapters of ncert books Science 18. Pollution of Air and Water Chapter Review is solved by exercise and chapterwise for class 8 with questions answers also with chapter review sections which helps the students who preparing for UPSC and other competitive exams and entrance exams.
Class 8 chapter 18. Pollution of Air and Water Important key points for quick revision for board exams, ssc and upsc exams preparaion. - 18. Pollution of Air and Water - Chapter Review: NCERT Book Solutions for class 8th. All solutions and extra or additional solved questions for 18. Pollution of Air and Water : Chapter Review Science class 8th:English Medium NCERT Book Solutions. Class 8 chapter 18. Pollution of Air and Water Important key points for quick revision for board exams, ssc and upsc exams preparaion.
18. Pollution of Air and Water : Chapter Review Science class 8th:English Medium NCERT Book Solutions
Class 8 chapter 18. Pollution of Air and Water Important key points for quick revision for board exams, ssc and upsc exams preparaion. - 18. Pollution of Air and Water - Chapter Review: NCERT Book Solutions for class 8th. All solutions and extra or additional solved questions for 18. Pollution of Air and Water : Chapter Review Science class 8th:English Medium NCERT Book Solutions.
Class 8 18. Pollution of Air and Water Chapter Review: NCERT Book Solutions
NCERT Books Subjects for class 8th Hindi Medium
18. Pollution of Air and Water
Class 8 chapter 18. Pollution of Air and Water Important key points for quick revision for board exams, ssc and upsc exams preparaion.
Chapter Review
Chapter Review:
- The contamination of air by impurities like smoke and poisonous gases which may have a harmful impact on the living and the non-living components, this is called air pollution.
- The substances which contaminate the air and water. These are called pollutants.
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Components of air is Nitrogen 78%, Oxygen 21%, carbon dioxide, argon, and methane.
- Ozone layer prevents us to the ultraviolet rays coming from the sun.
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Ultraviolet rays carry radiations Which harm our body and cause various diseases like cancer and skin disorders.
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The sulpher dioxide and nitrogen dioxide form sulphuric acid and nitric acid react with moisture and water vapour in atmosphere. These form rain acidic . This is called acid rain.
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There is raising the quantity of CO2 in atmosphere resulting in increasing continue average temperature of atmosphere. This is called global warming.
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If the sunlight enters into nursery (glass house) which is not allowed to come out. The trapped heat warms the green plants. Similarly our atmosphere trapped radiation and warms the earth. This effect is known as green house effect.
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The full form of CFCs is Chlorofluorocarbons.
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The full form of WWF is Word wide Fund.
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The green house gases are CO2 , Methane and nitrous oxide etc.
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An ambitious plan to save the river, called the Ganga Action Plan was
launched in 1985. -
Water which is suitable for drinking is called potable water.
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The 4R principle is Reduce, reuse, recycle and recover.
Class 8 chapter 18. Pollution of Air and Water Important key points for quick revision for board exams, ssc and upsc exams preparaion.
See other sub-topics of this chapter:
4. Additional Questions With Solutions
5. Additional Questions With Solutions
Class 8 chapter 18. Pollution of Air and Water Important key points for quick revision for board exams, ssc and upsc exams preparaion. - 18. Pollution of Air and Water - Chapter Review: NCERT Book Solutions for class 8th. All solutions and extra or additional solved questions for 18. Pollution of Air and Water : Chapter Review Science class 8th:English Medium NCERT Book Solutions. Class 8 chapter 18. Pollution of Air and Water Important key points for quick revision for board exams, ssc and upsc exams preparaion.
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Notes And NCERT Solutions
Our NCERT Solution and CBSE Notes are prepared for Term 1 and Terms 2 exams also Board exam Preparation.
Science Chapter List
1. Crop Production And Management
2. Microorganisms : Friend And Foe
3. Synthetic Fibres And Plastics
4. Materials : Metals And Non-Metals
5. Coal And Petroleum
6. Combustion And Flame
7. Conservation of Plants And Animals
8. Cell - Structure and functions
9. Reproduction in animals
10. Reaching the age of adolescence
11. Force And Pressure
12. Friction
13. Sound
14. Chemical Effects of Electric Current
15. Some Natural Phenomena
16. Light
17. Stars And The Solar System
18. Pollution of Air and Water
