• 1. 
    Which one represents the regulative function of forests?

  • storage and release of gases
  • production of essential oils
  • production of wood
  • conservation of water and soil
  • 2. 
    In many industries, tin, steel and copper are being substituted by

  • ceramics
  • high-strength glass fibres
  • plastics
  • all of these
  • 3. 
    Demersal fish is obtained from

  • open sea
  • sea bottom
  • estuaries
  • lakes
  • 4. 
    Deforestation may reduce the chances of

  • frequent landslides
  • erosion of surface soil
  • rainfall
  • frequent cyclones
  • 5. 
    Soil conservation is the process where

  • soil is aerated
  • soil is protected against loss
  • sterile soil is converted to fertile soil
  • soil erosion is allowed
  • 6. 
    Which of the following is an anti-forest conservation activity?

  • preservation of wild animals
  • preservation of fires
  • clear felling
  • economy in lumbering
  • 7. 
    Soil erosion can be prevented by

  • Afforestation
  • overgrazing
  • increasing birds population
  • removal of vegetation
  • 8. 
    The energy produced by the hydel-power plant is

  • Non-polluting and non-renewable
  • Polluting and non-renewable
  • Non-polluting and renewable
  • Polluting and renewable
  • 9. 
    This is an example of non-polluting renewable type of energy

  • tidal
  • wind
  • solar
  • all of these
  • 10. 
    This group consists of non-renewable organic resources

  • Water, air and minerals
  • natural gas, oil and coal
  • wood, water and natural pastures
  • sand, air and clay
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