Which gas is filled in a bulb to prevent oxidation of tungsten wire?

Oxygen

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Carbon dioxide

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Nitrogen

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Helium

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Solution

The correct option is C
Nitrogen

At ordinary temperature and pressure, nitrogen behaves like an inert gas, i.e. it doesn't react with other gases. Hence, the bulb is filled with nitrogen gas to prevent oxydation of tungsten wire.

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N O

20.3 g

5.89 g

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