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Electricity — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceElectricity2 Marks
Question
Why are electric bulbs filled with chemically inactive nitrogen and argon?
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Answer

The closed glass chamber of the bulb contains, an inactive (inert) gas, Argon. The glass chamber can't be filled with air as the presence of oxygen will cause the filament to burn, i.e. react with oxygen.An obviously, inert gas won't react with the filament. Nitrogen is also used like argon.

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