Which among the following gases can be liquified easily ?A. ChlorineB. NitrogenC. OxygenD. Hydrogen

Which among the following gases can be liquified easily ?A. ChlorineB.

1.	Which among the following gases can be liquified easily ?A. ChlorineB. NitrogenC. OxygenD. Hydrogen
Answer» Correct Answer - A A gas can be liquified when its temperature is below critical temperature , by cooling or compressing it . Gases which have high critical temperatures (such as `Cl_(2) , NH_(3) , CO_(2) , SO_(2)` etc.) can be liquified by applying a suitable pressure alone . permanent gases (such as `H_(2) , N_(2) , O_(2) `etc.) cannot be liquified by the action of pressure and cooling .

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Which among the following gases can be liquified easily ?A. ChlorineB. NitrogenC. OxygenD. Hydrogen

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