Question

note an example of combustion reaction
options:-
(a) burning of coal
(b)digestion of food
(c)burning of fuel in a car engine
(d)all of the above

Answer 1

Its all of the above.
Burning of coal is combustion.
Believe it or not, digestion is combustion too, in a way, where our carbon based food is oxidised to release energy.
Fuel burning is combustion too.

Answer 2

burning of coal is the example of combustion reaction.
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