Across
- 4. : it doesn't catches fire on its own.
- 5. :These are formed from the dead remains of living organisms.
- 7. :Substances which have very low ignition temperature and can catch fire pretty easily.
- 8. : used for making ointments, candles, etc.
- 9. : the amount of energy produced on complete combustion of 1kg of a fuel.
- 10. : a dark oily liquid with unpleasant odour.
Down
- 1. :full form of (kJ/kg)
- 2. :It is readily available, cheap and burns easily.
- 3. :substances which vapourise during burning, gives what?
- 6. :Resources which are present in unlimited quantity.
- 9. : least polluting fuel for vehicle.