Question
A deep brown gas is formed by mixing two colourless gases which are
A.
$$N{O_2}\,\,{\text{and}}\,\,{O_2}$$
B.
$${N_2}O\,\,{\text{and}}\,\,NO$$
C.
$$NO\,\,{\text{and}}\,\,{O_2}$$
D.
$$N{H_3}\,\,{\text{and}}\,\,HCl$$
Answer :
$$NO\,\,{\text{and}}\,\,{O_2}$$
Solution :
$$2NO + {O_2} \to 2N{O_2}\,\,{\text{brown}}$$