Multiple choice general knowledge science & technology

Which gas is known as laughing gas?

  1. nitrogen trioxide

  2. nitrogen dioxide

  3. hydrogen

  4. nitrous oxide
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Nitrous oxide (N2O) is commonly called laughing gas due to its euphoric effects when inhaled. It was discovered in 1772 and has been used as an anesthetic and analgesic in medical and dental procedures for over 150 years.

Keep practicing — related questions