A copper coin is completely covered with a gold film and is placed in dilute \[HN{{O}_{3}}\]. This will result in formation of [CPMT 1981]

A copper coin is completely covered with a gold film and is placed in

1.	A copper coin is completely covered with a gold film and is placed in dilute \[HN{{O}_{3}}\]. This will result in formation of [CPMT 1981]
A.	Gold nitrate
B.	Copper nitrate
C.	None of these
D.	Purple of cassins
Answer» D. Purple of cassins

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A copper coin is completely covered with a gold film and is placed in dilute \[HN{{O}_{3}}\]. This will result in formation of [CPMT 1981]

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