D And F Block Elements Question 56
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.
BETA
