NextMockSearch exams, e.g. SSC CGL, UPPSC, Lekhpal
हिंदी
State PCS PYQPrelims 2023

UPPCS · Question 100

Which of the following is known as laughing gas?

  1. Chlorofluorocarbon
  2. Ammonia
  3. Nitrous oxide
  4. Carbon monoxide
Show answer & explanation

Answer: (C) Nitrous oxide

Explanation

Nitrous oxide (N2O) is laughing gas.