Question

Cooking gas is known as LPG (Liquified Petroleum Gas). How can a gas be liquified? (a) when pressure is applied to the gas (b) when temperature of the gas is increased (c) when gas is mixed with a liquid substitute (d) when the force of attraction between particle is reduced​

Answer 1

Answer:

(b) When pressure of the gas is increased is the correct option.

Explanation -

When pressure on a gas is increased, its molecules closer together, and its temperature is reduced, which removes enough energy to make it change from the gaseous to the liquid state.

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Answer 2

Answer:

LPG is a gas at atmospheric pressure and normal ambient temperatures, but it can be liquefied when moderate pressure is applied or when the temperature is sufficiently reduced. It can be easily condensed, packaged, stored and utilized, which makes it an ideal energy source for a wide range of applications