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1
IIT-JEE 1992
MCQ (Single Correct Answer)
+1
-0.25
The cyanide ion, CN- and N2 are isoelectronic, But in contrast to CN-, N2 is chemically inert, because of
A
low bond energy
B
absence of bond polarity
C
unsymmetrical electron distribution
D
presence of more number of electrons in bonding orbitals
2
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
3
IIT-JEE 1992
MCQ (Single Correct Answer)
+1
-0.25
The maximum number of hydrogen bonds a water molecule can form is
A
2
B
4
C
3
D
1
4
IIT-JEE 1989
MCQ (Single Correct Answer)
+1
-0.25
Which of the following is paramagnetic?
A
$$O_2^-$$
B
CN-
C
CO
D
NO+

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