Ravi’s grandmother gifted him a glass made up of silver. She kept the glass wrapped by a polythene but Ravi removed the polythene from it. After some days, he observed that it turns black in colour. This is because of the formation

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Silver sulphite

Silver carbonate

Silver oxide

Silver sulphide

answer is B.

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Detailed Solution

When silver is exposed to the atmosphere it reacts with hydrogen sulphide resulting in the formation of silver sulphide. This causes the blackening of silver.

$2 Ag (s) + H_{2} S (g) \to {Ag}_{2} S (s) + H_{2} (g)$

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