Q38Multiple choice
A silver article generally turns black when kept in the open for a few days. The article when rubbed with toothpaste again starts shining.
- (a)Why do silver articles turn black when kept in the open for a few days? Name the phenomenon involved.
- (b)Name the black substance formed and give its chemical formula. CHEMICAL REACTIONS AND EQUATIONS 7 .QPI#PUYGT3WGUVKQPU
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(a) Why do silver articles turn black when kept in the open for a few days? Name the phenomenon involved.
(b) Name the black substance formed and give its chemical formula. CHEMICAL REACTIONS AND EQUATIONS 7 .QPI#PUYGT3WGUVKQPU