D-And F-Block Elements Ques 232

Question: A copper coin is completely covered with a gold film and is placed in dilute $ HNO_3 $ . This will result in formation of

[CPMT 1981]

Options:

A) Gold nitrate

B) Copper nitrate

C) None of these

D) Purple of cassins

Show Answer

Answer:

Correct Answer: C

Solution:

None of the above. Since, gold is a noble metal and common acids do not attack on it if used singly.



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