Suggest a method to liquefy atmospheric gases. 


Atmospheric gases can be liquified by 

  • Increasing pressure 
  • Decreasing temperature 


When the atmospheric gases are compressed under high pressure , the particles of the gas come closer.

  • Due to this, the space between the particles decreases. 
  • After applying a certain pressure, the particles of gases start attracting each other, resulting in the formation of a liquid.
  • When the change of state from gaseous to liquid takes place, a lot of heat is released. 
  • Hence, to take away this heat released during the process, the temperature is also decreased. 

Gases has be liquified by cooling under pressure-Teachoo-01.jpg

  1. Class 9
  2. Chapter 1 Class 9 - Matter In Our Surroundings (Deleted)

About the Author

CA Maninder Singh's photo - Founder at Teachoo
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo