D-And F-Block Elements Ques 206
Question: Colourless solutions of the following four salts are placed separately in four different test tubes and a strip of copper is dipped in each one of these. Which solution will turn Blue
[MP PET 2002]
Options:
A) $ KNO_3 $
B) $ AgNO_3 $
C) $ Zn{{(NO_3)}_2} $
D) $ ZnSO_4 $
Show Answer
Answer:
Correct Answer: B
Solution:
When a strip of copper is dipped in the solution of silver nitrate, the solution becomes blue.
$ Cu $ is placed above $ Ag $ in electrochemical series. $ 2AgNO_3+Cu\to Cu{{(NO_3)}_2}+2Ag $
