Correct Answer - Option 4 : Nitrogen
The correct answer is Nitrogen.
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Helium, neon, argon krypton, and argon are the gases used in light bulbs.
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Argon is a commonly used gas used to fill light bulbs.
- This increases bulb life by preventing tungsten filaments from deteriorating too quickly.
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In modern times nitrogen gas is filled which protects the fibers of tungsten.
- In 1883 Lavashie named hydrogen because it burns with oxygen to form water.
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Hydrogen is the first element of the periodic table.
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Joseph Priestley prepared oxygen gas by heating mercuric oxide in 1664 CE.
