Silver articles become black when kept in open for some time
Metals and Non-metals (10)Silver articles become black when kept in open for some time, whereas copper vessels lose their shiny brown surfaces and gain a green coat when kept in open. Name the substances present in air with which these metals react and write the name of the products formed.
Answer
Silver - sulphur in air - Silver sulphide
Copper - Moisture & Carbon dioxide - Copper Carbonate
Exam Year:
2019
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