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.
Burning of wood and coal causes __________ of air.
Fire produced by oil cannot be controlled by ___________ .
List conditions under which combustion can take place.
Conditions necessary for combustion are :
(i) Presence of combustible substance.
(ii) Attainment of ignition temperature.
(iii) Proper supply of air to provide oxygen.
A liquid fuel, used in homes is __________
Fuel must be heated to its __________ before it starts burning.