1

### IIT-JEE 1999

The correct order of increasing C - O bond length of CO, $CO_3^{2-}$, CO2 is
A
$CO_3^{2-}$ < CO2 < CO
B
CO2 < $CO_3^{2-}$ < CO
C
CO < $CO_3^{2-}$ < CO2
D
CO < CO2 < $CO_3^{2-}$
2

### IIT-JEE 1998

Read the following Assertion and Reason and answer as per the options given below

Assetion: LiCl is predominantly a covalent compound

Reason : Electronegativity difference between Li and Cl is too small
A
If both assertion and reason are correct and reason is the correct explanation of the assertion
B
If both assertion and reason are correct and reason is not the correct explanation of the assertion
C
If assertion is correct but reason is incorrect
D
If assertion is incorrect but reason is correct
3

### IIT-JEE 1998

The geometry and the type of hybrid orbital present about the central atom in BF3 is
A
linear, sp
B
trigonal planar, sp2
C
tetrahedral, sp3
D
pyramidal, sp3
4

### IIT-JEE 1997

Which one of the following compounds has sp2 hybridization?
A
CO2
B
SO2
C
N2O
D
CO