Question

Which of the following compounds does not evolve a colored gas on decomposition?

• A. $Mg(N{O}_3{)}_2$
• B. $LiN{O}_3$
• C. $NaN{O}_3$
• D. $Ca(N{O}_3{)}_2$

Answer 1

The correct option is C $NaN{O}_3$

$NaN{O}_3\stackrel{\Delta }{\to }NaN{O}_2+O_2$.
In other reactions $N{O}_2$ is produced which is reddish-brown coloured gas.