Given below are the critical temperatures of a few gases . When the gases are started cooling , which gas will liquefy first and which will liquefy in the end ? A. `N_(2)` will liquefy first and `NH_(3)` at last .B. `NH_(3)` will liquefy first and `CO_(2)` at last .C. `NH_(3)` will liquefy first and `N_(2)` at last .D. `CO_(2)` will liquefy first and `NH_(3)` at last .

Given below are the critical temperatures of a few gases . When the ga

1.	Given below are the critical temperatures of a few gases . When the gases are started cooling , which gas will liquefy first and which will liquefy in the end ? A. `N_(2)` will liquefy first and `NH_(3)` at last .B. `NH_(3)` will liquefy first and `CO_(2)` at last .C. `NH_(3)` will liquefy first and `N_(2)` at last .D. `CO_(2)` will liquefy first and `NH_(3)` at last .
Answer» Correct Answer - C Higher the critical temperature, faster is the liquefaction of the gas. Hence, `NH_(3)` will liquefy first and `N_(2)` at last.

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The gases obey the different gas laws only theoretically. Practically all of them show some deviation from these laws. These are called real gases. The deviation are maximum under high pressyre and at low temperature. These are comparatively small when the conditions are reversed. It has been found that the easily liquefiable gases show more deviations from the ideal gas beheviour as compared to the gases which are liqufied with diffculty. Gas deviates from ideal gas beheviour because moleculesA. are coloulessB. attract each otherC. contain covalent bondD. show Brownian Movement.
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