Q111
General ScienceChemistry
Which among the following is popularly called 'Laughing Gas'?
- a.Nitric oxide
- b.Nitrous oxide
- c.Nitrogen pentoxide
- d.Nitrogen
Answer: (B) Nitrous oxide
Nitrous oxide (N₂O) is commonly known as 'Laughing Gas' because inhaling small amounts causes euphoria, giddiness, and sometimes uncontrollable laughter. It is used as an anaesthetic in dentistry and medicine, and also as a propellant in aerosol whipped cream canisters.