Railway Recruitment Board General Awareness — Question 1498
Question
Which gas is commonly known as 'laughing gas'?
- Carbon dioxide
- Nitrous oxide (N2O)
- Nitrogen dioxide
- Methane
Correct answer
B — Nitrous oxide (N2O)
Explanation (English)
Nitrous oxide (N2O) is called laughing gas and is used as an anaesthetic.
More General Awareness questions
- Geography — What is the capital of Manipur?
- Computers — One kilobyte (KB) is equal to how many bytes?
- History — In which year was the Second Battle of Panipat fought?
- History — Who wrote the historical chronicle 'Rajatarangini'?
- History — Who founded the Slave (Mamluk) Dynasty of the Delhi Sultanate?
- Science — Who authored the book 'On the Origin of Species'?
Practice 1000+ more questions like this
TestPod AI has hand-curated previous-year-questions for SSC, RRB NTPC, IBPS PO, SBI Clerk, and more — with AI explanations in Tanglish, Hinglish, and English.