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Q. The gas used to extinguish fire is:
Answer: Carbon dioxide
Notes: Fires require these 3 things: a fuel (an inflammable hydro carbon) a source of oxygen, and heat. Carbon dioxide is most commonly used to extinguish fire as it is non-supporter of combustion and also being heavier air displaces oxygen, thus choking the very source of a fire.

This question is part of 40000+ MCQs GKToday PCS Mock Tests Series in GKToday Android app.

Question Number: 89 in GKToday PCS Mock Test - 291 in above course in App.