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English
State PCS PYQPrelims 2023

UPPCS · प्रश्न 100

Which of the following is known as laughing gas?

  1. Chlorofluorocarbon
  2. Ammonia
  3. Nitrous oxide
  4. Carbon monoxide
उत्तर देखें और व्याख्या

उत्तर: (C) Nitrous oxide

व्याख्या

Nitrous oxide (N2O) is laughing gas.