Question

Cooking gas cylinders placed on the top floor cause more fire hazard on leakage to the lower floors because lpg (liquified petroleum gas) is

Answer 1

The answer is heavier than air.

Cooking gas cylinders placed on the top floor cause more fire hazard on leakage to the lower floors because LPG (Liquefied Petroleum Gas) is heavier than air. Because of this, the leaked gas can spread to the surroundings at a faster rate. This can trigger a fire hazard in case of instances such as putting on an electric switch.