CBSE Class 8 Science Water Pollutants
- Define waterbpollution
- Explain the uses of plastic in 5 different areas/fields
- What are the main sources of water pollution?
- What do you mean by untreated sewage?
- What is an industrial effluent and what does it contain?
- What is an oil spill? Why is it considered a water pollutant?
- What is eutrophication?
- Name the organisms due to which the ponds often look green in colour? What is the source for growth of such organisms?
- What are water pollutants?
- What do the bacteria present in the faeces of mammals indicate?
