2321. The gas common known as Laughing gas is?
ہنسی گیس کے نام سے مشہور گیس کیا ہے؟
- A. Hydrogen
- B. Nitrous Oxide
- C. None of these
- D. Oxygen
Check answer and explanation
Answer: Nitrous Oxide
Explanation Nitrous oxide , commonly known as laughing gas. It is a colorless, non-flammable gas used in medicine. Nitrous oxide (N₂O) causes temporary laughing and relaxation . Additional information : Nitrous oxide was discovered by Joseph Priestley in 1772 . Last verified on 18-01-2026