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A student has been collecting silver coins and copper coins. One day s
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Some metals like silver, copper, and iron get colored coating over them when they are exposed to air. What are the colour and chemical name of the substance of coating? - Quora
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Reena has been collecting silver coins and copper coins. One day, she observed a black coating on silver coins and a green coating on copper coins. (a) State chemical phenomenon is responsible
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Reena has been collecting silver coins and copper coins. One day, she observed a black coating on silver coins and a green coating on copper coins. (a) State chemical phenomenon is responsible
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Silver articles become black when kept in open for sometime whereas copper vessels lose their shiny brown - Brainly.in
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