Shreya's father got a transfer from Lucknow to Goa. When Shreya starte – InterviewSolution

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1.	Shreya's father got a transfer from Lucknow to Goa. When Shreya started living in goa she observed that all her bangles made up of metals were getting a layer of brown coating. This layer of brown coating is due to a process called ___ .
Answer» Shreya's father got a transfer from Lucknow to Goa. When Shreya started living in goa she observed that all her bangles made up of metals were getting a layer of brown coating. This layer of brown coating is due to a process called ___ .

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