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1
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
According to the Periodic Law of elements, the variation in properties of elements is related to their
A
nuclear masses
B
atomic numbers
C
nuclear neutron-proton number ratios
D
atomic masses
2
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
Which one of the following is an amphoteric oxide?
A
Na2O
B
SO2
C
B2O3
D
ZnO
3
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
The reduction in atomic size with increase in atomic number is a characteristic of elements of
A
$$d$$ - block
B
$$f$$ - block
C
Radioactive series
D
High atomic masses.
4
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
The atomic numbers of Vanadium (V), Chromium (cr), Manganese (Mn) and Iron (Fe), respectively, $$23,24,25$$ and $$26$$. Which one of these may be expected to have the higher second ionization enthalpy?
A
Cr
B
Mn
C
Fe
D
V
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