1
AIPMT 2005
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.
2
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
The number of moles of KMnO4 reduced by one mole of KI in alkaline medium is
A
one
B
two
C
five
D
one fifth
3
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
The aqueous solution containing which one of the following ions will be colourless?
(Atomic number : Sc = 21, Fe = 26, Ti = 22, Mn = 25)
A
Sc3+
B
Fe2+
C
Ti3+
D
Mn2+
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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