Science, asked by brainfreez, 1 year ago

Aastha has been collecting silver coins and copper coins one day she observed a black coating on Silver coins and green coating on copper coins which chemical phenomenon is responsible for this coatings write the chemical name of black and green coating

Answers

Answered by manasa371
0
I think electro platting....
may be right or wrong
sohamdatt: wrong
manasa371: ohh
manasa371: sry
manasa371: then wt may be
Answered by sohamdatt
3
the reason for the black colour of silver coins is due to reaction of sulphur and oxygen
brainfreez: i think that too
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