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Question
Have you seen the following thing?
Silver ornaments or idols exposed to air for a long time.
Short Answer
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Solution
When silver ornaments or idols are left exposed to air for a long period, silver reacts with the sulphur present in the air and forms a black coating of silver sulphide on its surface.
(Ag2S)
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Chapter 8: Metallurgy - Intext Questions [Page 106]
