1
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Copper sulphate dissolves in excess of KCN to give
A
Cu(CN)2
B
CuCN
C
[Cu(CN)4]3$$-$$
D
[Cu(CN)4]2$$-$$
2
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
More number of oxidation states are exhibited by the actinoids than by the lanthanoids. The main reason for this is
A
more active nature of the actinoids
B
more energy difference between 5f and 6d orbitals than that between 4f and 5d orbitals
C
lesser energy difference between 5f and 6d orbitals than that between 4f and 5d orbitals
D
greater metallic character of the lanthanoids than that of the corresponding actinoids.
3
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
In which of the following pairs are both the ions coloured in aqueous solution?
(At. no. : Sc = 21, Ti = 22, Ni = 28, Cu = 29, Co = 27)
A
Ni2+, Cu+
B
Ni2+, Ti3+
C
Sc3+, Ti3+
D
Sc3+, Co2+.
4
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Four successive members of the first row transition elements are listed below with their atomic numbers. Which one of them is expected to have the highest third ionisation enthalpy?
A
Vanadium (Z = 23)
B
Chromium (Z = 24)
C
Manganese (Z = 25)
D
Iron (Z = 26)
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