65ᵗʰ B.P.S.C. (Pre) 2019
Which is used as laughing gas –
aNitrous oxide✓ Correct
bNitrogen dioxide
cNitrogen trioxide
dNitrogen tetra oxide
Explanation
Nitrous oxide (N2O) is “laughing gas”. It causes laughter when inhaled. Doctors also use it as an anesthetic. ## Acid, Base and Salt
general-science