1
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Which one of the following does not correctly represent the correct order of the property indicated against it?
A
Ti < V < Cr < Mn; increasing number of oxidation states
B
Ti3+ < V3+ < Cr3+ < Mn3+ : increasing magnetic moment
C
Ti < V < Cr < Mn : increasing melting points
D
Ti < V < Mn < Cr : increasing 2nd ionization enthalpy
2
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Which of the following exhibits only + 3 oxidation state?
A
U
B
Th
C
Ac
D
Pa
3
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Four successive members of the first series of the transition metals are listed below. For which one of them the standard potential $$\left( {E_{{M^{2 + }}/M}^o} \right)$$ value has a positive sign?
A
Co (Z = 27)
B
Ni (Z = 28)
C
Cu (Z = 29)
D
Fe (Z = 26)
4
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
The catalytic activity of transition metals and their compounds is ascribed mainly to
A
their magnetic behaviour
B
their unfilled $$d$$-orbitals
C
their ability to adopt variable oxidation states
D
their chemical reactivity
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