SOURCES OF ENERGY

Edit Answers
12345678910111213
Across
  1. 4. a place in West Bengal which is the largest coal mines in West Bengal
  2. 6. the highest grade of coal
  3. 7. the type of sources of energy those that use man-made materials as sources of energy
  4. 9. the type of fuels those were formed over a period of millions of years, by the action of heat and pressure(of the earth's core) on the remain of dead plants and animals
  5. 10. the substances which produce heat on burning in air
  6. 12. one of the largest coal mine in the state of Jharkhand
  7. 13. the type of energy those are inexhaustible natural resources
Down
  1. 1. the SI unit for the calorific value of a fuel
  2. 2. the process of string heating of coal in the absence of air
  3. 3. the process of conversion of dead plant materials into coal
  4. 5. the type of fuels those emit relatively low amount of pollutants and leave (virtually) no ash particles after burning
  5. 8. a readily combustible black rock or a brownish black sedimentary rock
  6. 11. the ability to do work