# Which of the following can be used as anaesthetic

$(a)\;N_2O\qquad(b)\;NO\qquad(c)\;NCl_3\qquad(d)\;NO_2$

$N_2O$
Nitrous oxide is the most commonly used inhalation anesthetic in dentistry and is commonly used in emergency centers and ambulatory surgery centers as well.
Hence (a) is the correct answer.
answered Nov 27, 2013
edited Oct 22, 2017