The gas that liquefies first, when cooled from 500 K to its critical temperature given in parenthesis is "____________".

The gas that liquefies first, when cooled from 500 K to its critical t

1.	The gas that liquefies first, when cooled from 500 K to its critical temperature given in parenthesis is "____________".
Answer» `NH_(3) ( 405.5K)` `CO_(2) ( 304.1K ) ` `N_(2) ( 126.0 K ) ` `O_(2) ( 154.3K)` Answer :A