1
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Which one of the following oxides is expected to exhibit paramagnetic behaviour?
A
CO2
B
SiO2
C
SO2
D
ClO2
2
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.
3
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)
4
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
A nuclide of an alkaline earth metal undergoes radioactive decay by emission of the periodic table to which the resulting daughter element would belong is
A
Gr.13
B
Gr. 17
C
Gr. 14
D
Gr. 16