Multiple choice

The substance used as anaesthetic is

  1. nitrous oxide

  2. iodoform

  3. aspirin

  4. amatol
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Nitrous oxide (N2O, laughing gas) has been used as an anesthetic since the 18th century. It produces analgesic and anesthetic effects when inhaled, reducing pain sensation and inducing unconsciousness in higher concentrations. It remains widely used in dentistry and minor surgical procedures due to its rapid onset and quick recovery.

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