Question

White silver chloride when exposed to sunlight turns Grey represent the reaction in a balanced chemical equation

Answer 1

B'coz in presence of sunlight silver chloride decomposes in silver and chlorine gas is evolved. Silver chloride is white coloured while silver is grey in colour. The balanced chemical equation for above reaction is:

2AgCl----->2Ag+Cl2

Answer 2

photoelectric decomposition of silver breaks it into its constituents i.e. silver and bromine
so ony silver remains which is grey in colour AgBr =Ag +Br