Question
We store silver chloride in dark coloured bottles.

Answer

(i) A chemical reaction that proceeds by absorption of light is called a photo chemical reaction.
(ii) We store silver chloride in dark coloured bottles in order to protect it from the effect of sunlight.
(iii) Sunlight can decompose silver chloride and form silver and chlorine.
(iv) As dark coloured bottles obstruct light, so silver chloride will get prevented from decomposition.
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