White silver chloride in sunlight turns to :

grey

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yellow

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green

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red

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Solution

The correct option is A grey
Sunlight carries a good amount of energy, which makes silver chloride (AgCl) decompose in silver (Ag) and chlorine. The metallic silver appears as very small 'flakes', essentially black, so these tiny black spots evenly distributed in the mass of white silver chloride makes it look grey.

$2 A g C l \to 2 A g + C l_{2}$

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Silver chloride turns black when it gets exposed to sunlight. Select the chemical reaction taking place resulting in this change.

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