Question

The $pH$ of aqueous $NaCl$ solution is:

Answer 1

$NaCl$ is a salt of strong acid $\left(HCl\right)$ with strong base $\left(NaOH\right)$.
$HCl+NaOH\to NaCl+H_{2}O$
Salt of a strong acid with the strong base is neutral with $pH=7$.