1

IIT-JEE 1985

MCQ (Single Correct Answer)
The molecule having one unpaired electron is
A
NO
B
CO
C
CN-
D
O2
2

IIT-JEE 1984

MCQ (Single Correct Answer)
On hybridization of one s and one p orbitals we get:
A
two mutually perpendicular orbitals
B
two orbitals at 180o
C
four orbitals directed tetrahedrally
D
three orbitals in a plane
3

IIT-JEE 1983

MCQ (Single Correct Answer)
The types of bonds present in CuSO4.5H2O are only
A
electrovalent and covalent
B
electrovalent and coordinate covalent
C
electrovalent, covalent and coordinate covalent
D
covalent and coordinate covalent
4

IIT-JEE 1983

MCQ (Single Correct Answer)
Which one among the following does not have the hydrogen bond?
A
phenol
B
liquid NH3
C
water
D
liquid HCl

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