NCERT Question 1 - Chapter 18 Class 8 - Pollution of Air and Water

What are the different ways in which water gets contaminated ?

Answer

Water gets contaminated by

• Home Waste
  Cities throw garbage directly into the river
  Polythene bags are thrown into river which take thousands of years to decompose
  
  

• Festivals
  People immerse idols of gods and goddesses into rivers during festivals
  
  

• What are the different ways in which water gets contaminated ?

  
  

  Answer

  
  

  Water gets contaminated by

• Home Waste
  Cities throw garbage directly into the river
  Polythene bags are thrown into river which take thousands of years to decompose
  
  
• Festivals
  People immerse idols of gods and goddesses into rivers during festivals
  
  
• Industries
  Different industries through toxic chemicals as waster directly into the river without treating them
  Hot water thrown by some industries also increase the temperature of water body killing plants and animals in water
  
  
• Farmers
  Fertilizers and Weedicides are used by farmers.Due to rain,they are washed down and flow into river
  Different industries through toxic chemicals as waster directly into the river without treating them
  Hot water thrown by some industries also increase the temperature of water body killing plants and animals in water
  
  
• Farmers
  

           Fertilizers and Weedicides are used by farmers.Due to rain,they are washed down and flow into river