Which of the following gases is required for combustion?

Correct option is C

Oxygen is essential for combustion. Combustion is a chemical reaction where a substance reacts with oxygen, releasing energy in the form of heat and light. Oxygen acts as an oxidizing agent in this process.

Key points:
● Combustion cannot occur without oxygen.
● The products of combustion depend on the substance being burned (e.g., CO2_22​ and water for hydrocarbons).
● The presence of oxygen in the atmosphere supports the burning of fuels.
● Combustion is used in various applications, including power generation, cooking, and engines.
● Incomplete combustion can occur if oxygen supply is insufficient, producing carbon monoxide.
● Fire extinguishers often work by cutting off the oxygen supply.