Question

just a method in liquefy atmospheric gases

Answer 1

there are 2 ways
1.fractional distillation
2.increasing and decreasing temperature
write which u want

Answer 2

Hey there!

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How can we liquefy gases?

We know that particles of gases are far from each other's because of weak force of attraction and that's why they can move here and there, what if we bring these Particles closer?

They will turn into liquid, as particles will be near each other, they will turn into liquid, we know that particles of liquid are quite near to each other.

So that's a way we can liquefy gases. We have to just decrease temperature (in order to reduce kinetic energy of particles) and increase pressure (to bring particles together).

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Hope it helps...!!!