What is flame ?
A flame is the shining zone in which a combustible gaseous material undergoes combustion producing heat and light.
What is the principle to extinguish fire ?
The principle of fire extinguisher is cut off the contact between the fuel and oxygen to control Fire.
What substances are used to extinguish fire in case of electric short circuit ?
Sand or soil and carbon dioxide.
Why should water not be used for extinguishing oil fires ?
Water should not be used for extinguishing oil fires because oil is lighter than water. oil forms a thin layer over the surface of water and flows with the water, thereby spreading fire to larger areas.