Multiple choice general knowledge science & technology

The gas usually filled in the electric bulb is

  1. nitrogen

  2. hydrogen

  3. carbon dioxide

  4. oxygen
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Nitrogen gas is filled in electric bulbs because it is inert and prevents the filament from oxidizing at high temperatures. Hydrogen is reactive and would damage the filament. Oxygen would cause burning and carbon dioxide is not used for this purpose.

Keep practicing — related questions