Question

why is
a) carbon dioxide a good gas for fire extinguisher ?
b)liquid nitrogen used to freeze food ?
c) argon used in light bulbs ?​

Answer 1

Answer:

a.Carbon dioxide extinguishes work by displacing oxygen, or taking away the oxygen element of the fire triangle.

Answer 2

Answer:

(a) Ans:- Because the liquid nitrogen is so cold that it freeze food immediately.

(b) Ans:- Because the argon surrounding it, the wire filament can get very hot without burning