1
IIT-JEE 1995 Screening
MCQ (Single Correct Answer)
+1
-0.25
Number of paired electrons in O2 molecules is
A
7
B
8
C
16
D
14
2
IIT-JEE 1995 Screening
MCQ (Single Correct Answer)
+1
-0.25
Which one is most ionic
A
P2O5
B
CrO3
C
MnO
D
Mn2O7
3
IIT-JEE 1993
MCQ (Single Correct Answer)
+1
-0.25
Pick out the isoelectronic structures from the following
I. $$CH_3^+$$
II. $$H_3O^+$$
III. $$NH_3$$
IV. $$CH_3^-$$
A
I and II
B
III and IV
C
I and III
D
II, III and IV
4
IIT-JEE 1992
MCQ (Single Correct Answer)
+1
-0.25
The type of hybrid orbitals used by the chlorine atom in $$ClO_2^-$$ is
A
sp3
B
sp2
C
sp
D
none of these
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