Question

Gases posses characteristic critical temperature which depends upon the magnitude of intermolecular forces upon the magnitude of intermolecular forces between the particles. Following are the critical temperature of some gases.
`{:("Gases",H_(2),He,O_(2),N_(2)),("Critical temperature",,,,),("in Kelvin",33.2,5.3,154.3,126):}`
From the above data what would be the order of liquefaction of these gases ? Start writing the order from the gas liquefying first
A. `H_(2).He,O_(2),N_(2)`
B. `He, O_(2),H_(2),N_(2)`
C. `N_(2),O_(2),He,H_(2)`
D. `O_(2),N_(2),H_(2),He`

Answer 1

Correct Answer - D
Higher the critical temperature, more easily is the gas liquefied. Hence, order of liquefaction starting with the gas liquefying first will be : `O_(2),N_(2),H_(2),He`.