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  9. Q7

TNPSC Group-I 2019 · Question 7 of 9

Nitrous Oxide is known as laughing gas. It is also used in medical field as:

Chemistry

  1. AInstant horse power
  2. BPropellant
  3. CAntiseptic
  4. DAnestheticCorrect

Answer: D. Anesthetic

Explanation

Nitrous oxide (laughing gas) is used in medicine as an anesthetic/analgesic agent.

Source: Appolo Study Centre compilation of TNPSC Group-I Preliminary Examination 2019 (03.03.2019) tentative answer key

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