Multiple choice

What does the coloured discharge tubes for advertisement mainly contain?

  1. Xenon

  2. Argon

  3. Helium

  4. Neon

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

Neon gas produces the characteristic bright red-orange glow when electrically excited, making it ideal for colorful advertisement signs. While other noble gases can be used, neon is the most common and gives these signs their name.