Combustion takes place when fuel, most commonly a fossil fuel, reacts with the oxygen in air to produce heat. The heat created by the burning of a fossil fuel is used in the operation of equipment such as boilers, furnaces, kilns, and engines.

2. COMBUSTION

3. The ignition temperature or kindling point of a
substance is the lowest temperature at which it
spontaneously ignites in normal atmosphere without
an external source of ignition, such as a flame or
spark.
IGNITION
TEMPERATURE

4. CALORIFIC VALUE
The energy contained in a fuel or food, determined
by measuring the heat produced by the complete
combustion of a specified quantity of it. This is
now usually expressed in joules per kilogram.

5. SUPPORTER OF
COMBUSTION

6. NON -SUPPORTER OF
COMBUSTION