Answers

2015-07-06T16:49:45+05:30
In light bulbs the tungsten filament is subjected to high temperature, therefore  a gas present in the bulb may react with the filament unless it is a noble gas....argon being the most abundant noble gas is thus preferred over other noble gases.
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2015-07-06T17:21:15+05:30
Since argon is a noble gas so it helps to react with the filament of the bulb so it is used in the bulbs
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