Which gas is essential for combustion, or burning, to take place?

Explanation

Oxygen is required for combustion, since it reacts with fuel in an exothermic chemical reaction that releases heat and light. This is why fires can be smothered by cutting off their oxygen supply, such as with a fire blanket or by covering a grease fire with a lid. Without sufficient oxygen a fire cannot sustain itself. Explore more Everyday Science MCQs on mcqstutor to keep practicing.