# Which one of the following is formed apart from sodium chloride when chlorine reacts with hot concentrated sodium hydroxide ?

$\begin {array} {1 1} (1)\;NaOCl & \quad (2)\;NaClO_3 \\ (3)\;NaClO_2 & \quad (4)\;NaClO_4 \end {array}$

$(3)\;NaClO_2$