Question

Suggest a method to liquefy atmospheric gases.

NCERT Class 9th Science Ch 1 Matter in Our Surroundings

Answer 1

take a plasti bottel ,
put chilled /cold water in it after some time you can see water dropllets around it

this cold water changes atmospheric water into liquid form

Answer 2

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The gases can be converted into liquids by bringing its particles closer so atmospheric gases can be liquefied either by decreasing temperature or by increasing pressure.