1.

Air is a homegeneous mixture of gases which also contains argon and nitrogen which are used for filling electric bulbs. But air is not filled in electric bulbs because

Answer»

the active component of air oxidizes the filament
the BOILING point of air is greater than that of argon or nitrogen
air has impurities like dust particles

Solution :SINCE air CONSISTS of an active component that is oxygen, it oxidises tungsten filment or any other METAL used as a filment. Hence ELECTRIC bulbs are filled with inert gas like argon or chemially inert nitrogen.


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