Observation

• This question was attempted by many candidates and their performance was good. They did well in it.
  The expected answer is as follows: 

  ENVIRONMENTAL WATER POLLUTANTS

  • refuse from homes and industries / debris
  • sewage from homes and industries
  • agricultural wastes/fertilizer /herbicides/insecticides
  • oil leakages
  • use of chemicals for fishing in our water bodies
  • chemical wastes from industry/industrial wastes
  • hot water from industries/power stations
  • pathogens / germs / bacteria