Question

Silver bromide are stored in dark. Bottles why ?

Answer 1

Silver bromide is stored in dark so as to avoid action by sunlight.

When silver bromide is kept in light, it reacts with Sunlight and decomposes to Silver and Bromium.

$2AgBr_{(s)} <=> 2Ag_{s} + Br_{2}_{g}$

To avoid this conditions, Usually Silver bromide is stored in dark bottles.

The dark coloured bottles act as Opaque substance and do not allow the light to pass through it.