Class 8 Chapter 6 Combustion and Flame

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Across
  1. 3. Cutting of trees leads to this phenomenon
  2. 5. A gas used to extinguish fire
  3. 6. Gas used for household cooking
  4. 8. A sudden type of combustion without any apparent cause
  5. 9. 12th element of Periodic table, it is also major component of Thermite.
  6. 10. A gas necessary for process of combustion
Down
  1. 1. The amount of energy released by complete combustion of 1 kilogram of any fuel
  2. 2. A gas which forms due to incomplete combustion of fuel.
  3. 4. Sudden exothermic reaction leading to emission of huge amount of sound and light energy
  4. 5. A material which burns easily
  5. 7. The name of the phenomenon due to which the global temperature is increasing day by day