Question

Which of the following is known as neutral oxide?

• A. $NO$
• B. $N{O}_2$
• C. $N_2{O}_3$
• D. $N_2{O}_5$

Answer 1

The correct option is A $NO$

$NO$ is a neutral oxide whereas others are acidic oxides.

When $NO$ is dissolved in water, no acid or base is obtained.

Thus, when $N{O}_2$ is dissolved in water it gives nitric acid.

$3N{O}_2+H_{2}O\to 2HN{O}_3+NO$

When $N_2{O}_3$ is dissolved in water it gives nitrous acid.

$N_2{O}_3+H_{2}O\to 2HN{O}_2$

When $N_2{O}_5$ is dissolved in water it gives nitric acid.

$N_2{O}_5+H_{2}O\to 2HN{O}_3$

Note:

Neutral oxides are neither acidic nor basic.
They neither react with acids nor with bases. Examples include nitrous oxide $\left(N_{2}O\right)$, nitric oxide ($NO$), carbon monoxide ($CO$).