Fill in the blanks with suitable words
(a)A fuel must be heated to its____ before it starts burning.
(b)The most common supporter of combustion around us is ____
(c)The fire produced by burning oil cannot be controlled by____
(d)A liquid fuel used in homes is____
(e)The amount of heat evolved when 1kg of fuel is burnt completely is called its____
(f)The substance which vaporize during, give____
(g)Burning of wood and coal causes____ of air.