Combustion is said to take place when a substance burns in ______________ with the release of large amount of heat energy.

Air

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Oxygen

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Any (A) or (B)

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None of the above.

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Solution

The correct option is C
Any (A) or (B)

C: Any (A) or (B)
Combustion: The burning of substances in air or oxygen on heating, with the release of a large amount of heat energy and light energy, is called combustion.
Hence, the correct answer is an option (C): Any (A) or (B).

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Similar questions

	Respiration	Combustion
a.	Respiration is a slow process.	Combustion is relatively a fast process.
b.	Respiration takes place at the body temperature.	Combustion takes place at the ignition temperature of the fuel.
c.	Respiration produces CO₂ + H₂O and energy.	Combustion of hydrocarbons always produces only CO₂.
d.	Respiration takes place inside a cell.	Combustion takes place outside a cell.
e.	Respiration takes place at all times.	Combustion only takes place when a fuel or a combustible substance burns.

1.	The process of burning a substance in the presence of air or oxygen	....................
2.	A region where combustion of fuel takes place	....................
3.	Substances that produce heat and light energy on burning	....................
4.	A fuel that is generally black or brownish-black in colour	....................
5.	A type of coal with carbon content of around 92−98%	....................

A type of oxidation in which a substance reacts with oxygen rapidly to release a large amount of heat and light energy.

When a chemical change takes place with the release of heat energy, it is said to be a/an _______ reaction.

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