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JEE Main 11 April 2015 Paper
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© examsnet.com
Question : 60
Total: 90
A pink coloured salt turns blue on heating. The presence of which cation is most likely ?
C
u
2
+
F
e
2
+
Z
n
2
+
C
o
2
+
Validate
Solution:
Z
n
2
+
salts are white usually
F
e
2
+
salts are rarely pink.
C
u
2
+
salts are usually blue in hydrated form.
C
o
2
+
is pink in aqueous solution.
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