College of Admission Tests Multan

Miscellaneous

Solve the question of and select the option from the choices A through D/E. Check your Answer and view the explanation.

Question: 7

Which is used as Laughing gas is–
  • Nitrous Oxide
  • Nitrogen dioxide
  • Nitrogen Trioxide
  • Nitrogen Tetra Oxide

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Correct Answer: A

None
Sol. Nitrous Oxide (N_2 O) is also known as laughing gas. It is a colourless gas with a sweet odour and taste. Inhalation leads to disorientation, euphoria, numbness, loss of coordination, dizziness and ultimately a loss of consciousness. It is also used as the anesthetic gas.