A silver article generally turns black when kept in the open for a few – InterviewSolution

InterviewSolution

1.	A silver article generally turns black when kept in the open for a few days. The article when rubbed with toothpaste again starts shining. The phenomenon due to which silver articles turn black is called ___.
Answer» A silver article generally turns black when kept in the open for a few days. The article when rubbed with toothpaste again starts shining. The phenomenon due to which silver articles turn black is called ___.

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