Draw the structure of ${{\mathrm{NO}}_3}^{-}$.

What happens when zinc reacts with dil. ${\mathrm{HNO}}_3$ ?

What happens when copper reacts with conc. ${\mathrm{HNO}}_3$ ?

Complete the following reaction :

$\mathrm{Cu} + {\mathrm{HNO}}_3\left(\mathrm{dilute}\right) \to$

Complete the following reaction :

${\mathrm{I}}_2 + \mathrm{conc}. {\mathrm{HNO}}_3 \to$

Complete the following reaction :

$\mathrm{C} + \mathrm{conc}.{\mathrm{HNO}}_3\to$