Question

Mention one necessary condition for combustion to take place.

Answer 1

• The process in which a substance combines with Oxygen with simultaneous evolution of heat and light is called combustion.
• The Oxygen present in the air is required for combustion.
• Example: Burning of methane
• $\underset{\mathrm{Methane}}{{\mathrm{CH}}_4}+\underset{\mathrm{Oxygen}}{2{\mathrm{O}}_2}\to \underset{\mathrm{Carbon}\mathrm{dioxide}}{{\mathrm{CO}}_2}+\underset{\mathrm{Water}}{2{\mathrm{H}}_2\mathrm{O}}$