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1
IIT-JEE 2000 Screening
MCQ (Single Correct Answer)
+1
-0.25
The correct order of acidic strength is
A
Cl2O7 > SO2 > P4O10
B
CO2 > N2O5 > SO3
C
Na2O > MgO > Al2O3
D
K2O > CaO > MgO
2
IIT-JEE 1996
MCQ (Single Correct Answer)
+1
-0.25
Which of the following has the maximum number of unpaired electrons?
A
Mg2+
B
Ti3+
C
V3+
D
Fe2+
3
IIT-JEE 1995 Screening
MCQ (Single Correct Answer)
+1
-0.25
Which has most stable +2 oxidation state?
A
Sn
B
Pb
C
Fe
D
Ag
4
IIT-JEE 1992
MCQ (Single Correct Answer)
+1
-0.25
The statement that is not correct for the periodic classification of element is
A
The properties of elements are the periodic functions of their atomic numbers
B
Non-metallic elements are lesser in number than metallic elements
C
The first ionisation energies of elements along a period do not vary in a regular manner with increase in atomic number
D
For transition elements the d-subshells are filled with electrons monotonically with increase in atomic number.
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