Combustion & Flame
Across
- 1. Cheap,large amount of heat and no pollutant produced
- 5. source of heat energy
- 8. When substances vapourise during burning Carbonmonooxide Incomplete combustion produces this gas
- 10. Material suddenly burst into flames
- 14. Calorific Value of fuel efficiency
- 17. On the head of the matchstick and burns
- 18. which combust easily.
- 20. Caused by increased concentration of carbon dioxide
- 22. dry powder of chemical is used in fire extinguisher
- 23. Safe fuel, used in automobiles
- 25. Substance that undergoes combustion.
- 26. Large amount of gas, heat and light produced
- 27. lowest temperature at which a substance catch fire
Down
- 2. combustible Material which do not combust easily
- 3. Quick burning with lot of heat and light
- 4. Unburnt carbon particles are present
- 6. complete combustion takes place
- 7. Substances which catch fire at very low temperature
- 9. Used for fire due to electricity or oil
- 11. Oxides of sulphur and nitrogen dissolves in rainwater Sun produce heat and light by nuclear reaction
- 12. Amount of energy produced on complete combustion of 1kg of fuel
- 13. fuel for the body
- 15. Required for burning
- 16. Does not produce flame
- 18. A chemical process in which substance react with oxygen
- 19. Most corrosive gas
- 21. the most common fire extinguisher
- 24. best extinguisher