Which of the following is common in respiration and combustion?

oxygen

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release of heat and light

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natural process

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nitrogen

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Solution

The correct option is A
oxygen

Combustion is the process in which a substance reacts chemically with Oxygen, with the release of energy in the form of heat and light. it is an artificial process.
Respiration is the process in which inhaled air reacts with digested food material which results in the release of food energy, Carbon Dioxide, and Water. It is a natural process.
From the above statements, we conclude that only Oxygen is common between both Respiration and Combustion.
Therefore, the correct option is-(a) oxygen.

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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.

Which of the following is common for both respiration and combustion?

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