1

IIT-JEE 1992

MCQ (Single Correct Answer)
The maximum number of hydrogen bonds a water molecule can form is
A
2
B
4
C
3
D
1
2

IIT-JEE 1989

MCQ (Single Correct Answer)
Which of the following is paramagnetic?
A
$$O_2^-$$
B
CN-
C
CO
D
NO+
3

IIT-JEE 1989

MCQ (Single Correct Answer)
The compound in which $$\mathop C\limits^* $$ uses its sp3 hybrid orbitals for bond formation is
A
H $$\mathop C\limits^* $$ OOH
B
(H2N)2 $$\mathop C\limits^* $$ O
C
(CH3)3 $$\mathop C\limits^* $$ OH
D
CH3 $$\mathop C\limits^* $$ HO
4

IIT-JEE 1989

MCQ (Single Correct Answer)
The molecule which has pyramidal shape is
A
PCl3
B
SO3
C
$$CO_3^{2-}$$
D
$$NO_3^-$$

Joint Entrance Examination

JEE Advanced JEE Main

Graduate Aptitude Test in Engineering

GATE CSE GATE ECE GATE ME GATE PI GATE EE GATE CE GATE IN

Medical

NEET

CBSE

Class 12