Question

What will happen if a lighted candle is brought near the mouth of a jar containing carbon dioxide gas

Answer 1

If a lighted candle is brought near the mouth of a jar containing carbon dioxide gas, then it will extinguish without any sound.

This is because carbon dioxide is a non- combustible gas and does not support combustion.

A combustible gas is one which supports burning of fire.

An example of combustible gas is oxygen.