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SSC CGL 2020 PYQ — Question 36

SSC CGL - 3rd March 2020 Shift 3 • General Awareness • Q36

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Which of the following is an inert gas most commonly found in light bulbs?

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Correct answer: B

Explanation

The correct answer is Option 2 i.e. Argon.

  • Argon is used in light bulbs.
  • The very thin metal filament inside the bulb would react with oxygen and burn away if the bulb were filled with air instead of argon. 
  • Argon stops the filament from burning away because it is unreactive.
  • The filament of an electric bulb is made of tungsten.