Multiple choice general knowledge

Balloons are filled with?

  1. helium

  2. oxygen

  3. nitrogen

  4. argon

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Helium is used to fill balloons because it is much lighter than air and non-flammable, making it safe for inflating balloons. Unlike hydrogen, helium is inert and does not pose a fire risk.