Which of the following act as a stabiliser for the storage of $${H_2}{O_2}?$$

Solution :
$${H_2}{O_2}$$  decomposes slowly on exposure to light.
$$2{H_2}{O_2}_{\left( l \right)} \to 2{H_2}{O_{\left( l \right)}} + {O_{2\left( g \right)}}$$
In the presence of metal surfaces or traces of alkali ( present in glass containers ), the above reaction is catalysed. It is, therefore, stored in wax-lined glass or plastic vessels in dark. Urea can be added as a stabiliser. It is kept away from dust because dust can induce explosive decomposition of the compound.