2. Fill in the blanks a. The amount of heat energy produced on completely burning of fuel is called the calorific value
b. The combustion in which no external heat is given is known as
c. Hydrogen being a highly inflammable gas and being a supporter of combustion.
d. Fuel must be heated to its before it starts burning.
e. Fire produced by oil cannot be controlled by.

a. The amount of heat energy produced on completely burning of 1 kg of fuel is called the calorific value

b. The combustion in which no external heat is given is known as spontaneous combustion.

c. Hydrogen being a highly inflammable gas and oxygen being a supporter of combustion.

d. Fuel must be heated to its ignition temperature before it starts burning.

e. Fire produced by oil cannot be controlled by water

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