Question

which gas is used to off the fire​

Answer 1

$\huge\bf\underline{\underline{\pink{**A} \orange{N}\blue{S}\red{W}\green{E}\purple{R**}}}$

Sodium bicarbonate, regular or ordinary used on class B and C fires, was the first of the dry chemical agents developed. In the heat of a fire, it releases a cloud of carbon dioxide that smothers the fire. That is, the gas drives oxygen away from the fire, thus stopping the chemical reaction.

Answer 2

$\large{\sf{CO_{2}}}$

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