Class VII

Heat obtained from solar furnace is used to drive
  1. turbines
  2. electricity generators
  3. both a and b
  4. vehicles
Need and demand of fossil fuels can be reduced by
  1. conserving energy
  2. storing energy
  3. utilizing energy
  4. transforming energy
Plankton buried under heat and pressure over a long period of time is turned in to
  1. crude oil
  2. natural gas
  3. coal
  4. kerosene
To play and work we get energy from
  1. food
  2. sunlight
  3. water
  4. oxygen
Living things are source of
  1. fossil fuel
  2. bio mass
  3. both a and b
  4. solar energy
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