Fill in the blanks:
(a) Burning of wood and coal causes ____________ of air.
(b) A liquid fuel, used in homes is ____________ .
(c) Fuel must be heated to its ____________ ____________ before it starts burning.
(d) Fire produced by oil cannot be controlled by ____________ .
NCERT Class VIII
Science - Main Course Book
Chapter 6. Combustion and Flame