Which of the following gas is used in bulb?

Q. Which of the following gas is used in bulb?
Answer: Argon
Notes: Argon gas is used in fluorescent and incandescent light bulbs to stop the oxygen in the light bulbs from corroding the hot tungsten filament. The use of argon in light bulbs prevents the evaporation of the tungsten filaments, which results in increased light bulb life.

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