Question : Which of the following gases is known as "laughing gas"?
Option 1: Nitrous oxide
Option 2: Nitrogen peroxide
Option 3: Nitrogen
Option 4: Nitric oxide
Correct Answer: Nitrous oxide
Solution : The correct option is Nitrous oxide .
The term "laughing gas" refers to nitrous oxide (N 2 O), a colourless and odourless gas. Because of its modest sedative and pain-relieving qualities, it has historically been employed as an anaesthetic in medical and dental treatments. The term "laughing gas" refers to the joyful, and occasionally giggly emotions that humans may have after breathing nitrous oxide in regulated environments.
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