science

biodiversity

water and solution

variety of species

importance of biodiversity

sources of food

balance in nature

recreational places

research

biodiversity management

  • banning the killing or trade of endemic or endangered animals
  • protecting the habitat
  • in situ preserves the animal within their natural habitat
  • ex situ preserves it outside their natural habitats

characteristics

  • high surface tension
  • boiling point = 100
  • freezing point = 0
  • colourless
  • density = 1 gcm

cohesive force

adhesive force

attractive force between the same particles

attractive force between different particles

electrolysis

Oxygen gas is produced at anode ( ➕ )

hydrogen gas is produced at the cathode ( ➖ )

factors affecting evaporation

humidity

surface area

surface area

movement of air

organic solvents

alcohol

kerosene

acetone

turpentine

ether

nail varnish, lacquer

perfume , antipseptic

lamp oil

paint remover

oil extractor

process of water purification

filtration

removes large suspended particles

oxidation

increases oxygen content to get rid of unpleasent smell

coagulation

slaked lime to reduce adicity , alum is also added so particles stick together and float to the bottom

sedimentation

suspended particles deposit at the bottom of the tank

filtration

removes suspended particles using sand filters

chlorination and fluoridation

chlorine added to kill microorganisms , sodium fluoride is added to prevent tooth decay

acid n alkali

universal indicators

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