Question

why is an electric bulb filling with argonor or nitrogen but not with air?

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Answer 1

Good question I am glad to answer it

Bulbs are filled with chemically inactive Nitrogen or Argon gas to prevent the oxidation of tungsten filament used in the bulb.

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Answer 2

Answer:

so as to create vacuum

Bulbs are filled with chemically inactive Nitrogen or Argon gas to prevent the oxidation of tungsten filament used in the bulb.