1.

It is possible to obtain oxygen from air by fractional distiilation because

Answer»

oxygen is in a different group of the periodic table from nitrogen
oxygen is more reactive than nitrogen
oxygen has higher b.p. than nitrogen
oxygen has a lower DENSITY than nitrogen

Solution :AIR is liquified by making use of the joule-Thomson effect (cooling by expansion oflhe GAS). WATER vapour and `CO_(2)` areremoved by solidification. The remaining constitucents of liquid air i.e., liquid oxygen and liquid nitrogen are separated by means of FRACTIONAL distillation (b.p. of `O_(2)= - 183^(@)C : b.P. " of" N_(2)= -195.8^(@)C`)


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