Q.1.
A hybrid orbital form s and p orbital can contribute to
-
33%
a) σ bond only
-
33%
b) π bond only
-
0%
c) either σ or π bond
-
33%
d) cannot be predicted
Q.2.
Which orbital is used by oxygen atom to form a sigma bond with other oxygen atom in O2 molecule
-
0%
a)pure p-orbital
-
33%
b) sp2 hybrid orbital
-
33%
c)sp3 hybrid orbital
-
33%
d)sp-hybrid orbital
Q.3.
the hybrid state of b in BF4- is
-
0%
a) sp2
-
0%
b) sp
-
0%
c)sp3
-
100%
d)no specific
Q.4.
C2H2 is iso structural with
-
50%
a) H2O2
-
50%
b) NO2
-
0%
c)SnCl2
-
0%
d)CO2
Q.5.
The weakest bond among the following is
-
0%
a) ionic
-
0%
b) covalent
-
50%
c) metallic
-
50%
d) hydrogen
Q.6.
Which of the following structure is most expected for molecule XeOF4
-
0%
a)Tetrahedral
-
100%
b) Square pyramidal
-
0%
c)Square planar
-
0%
d)Octahedral
Q.7.
Molecular shapes of SF4, CF4 and XeF4 are
-
0%
a) same with 2,0 and 1 lone pair of electrons respectively
-
0%
b) same with 1,1 and 1 lone pair of electrons respectively
-
100%
c)different with 1,0 and 2 lone pairs of electrons respectively
-
0%
d)different with 1,1 and 1 lone pairs of electrons respectively
Explanation
Q.8.
The hybrid state of S in SO3 is similar to that of
-
0%
a) C in C2H2
-
50%
b) C in C2H4
-
50%
c)C in CH4
-
0%
d)C in CO2
Q.9.
Two hybrid orbitals have a bond angle of 120°,. The percentage of s character in the hybrid orbital is nearly
-
0%
a) 25%
-
0%
b) 33%
-
100%
c) 50%
-
0%
d) 66%
Q.10.
The d orbital involved in sp3d hybridization is
-
0%
a)dxy
-
50%
b) dz2
-
0%
c)dx2 - y2
-
50%
d)dzx
Q.11.
In a change from PCl3 → PCl5, the hybrid state of P changes from
-
0%
a) sp2 to sp3
-
0%
b) sp3 to sp2
-
100%
c)sp3 to sp3d
-
0%
d)sp3 to dsp2
Q.12.
In OF2, Oxygen has hybridization of
-
50%
a) sp
-
0%
b) sp2
-
0%
c)sp3
-
50%
d)none of these
Q.13.
Which one is appreciably soluble in water
-
0%
a) CS2
-
0%
b) C2H5OH
-
0%
c) CCl4
-
100%
d) CHCl3
Q.14.
The geometrical arrangement and shape of I3- are respectively
-
50%
a)Trigonal bipyramidal geometry, linear shape
-
0%
b) Hexagonal geometry, T -sphape
-
50%
c)Triangular planar geometry, triangular shape
-
0%
d)Tetrahedral geometry, pyramidal shape
Q.15.
In which of the following molecules/ions, the central atom does not involved a d-orbital in the hybridization process
-
0%
a) I3-
-
0%
b) SF6
-
100%
c)[Cu(NH3)4]2+
-
0%
d)MnO4-
Q.16.
Pair of molecules having identical geometry is
-
0%
a) BF3, NH3
-
0%
b) BF3, AlF3
-
0%
c)BeF2, H2O
-
100%
d)BCl3, PCl3
Q.17.
Which of the following will be planar trigonal?
-
0%
a) PCl3
-
50%
b) NH3
-
50%
c)ClF3
-
0%
d)AlCl3
Q.18.
Compound in which central atom assumes sp3d hybridization is
-
50%
a) SO3
-
0%
b) PCl5
-
0%
c)SO2
-
50%
d)PCl3
Q.19.
Hydrogen fluoride is a liquid unlike other halides because
-
0%
a) HF molecules associate due to hydrogen bonding
-
0%
b) F2 is highly reactive
-
50%
c) HF is the weakest acid of all halogens
-
50%
d) Fluorine atom is the smallest of all halogens
Q.20.
Which of the following will be least polar
-
0%
a)N - H
-
50%
b) C - H
-
0%
c)O - H
-
50%
d)H - F
Q.21.
hich of the following compound has bond angle as nearly as 90°
-
0%
a) NH3
-
0%
b) H2S
-
33%
c)H2O
-
67%
d)CH4
Q.22.
Which of the following molecules has largest bond angle
-
0%
a) H2O
-
33%
b) NH3
-
33%
c)CH4
-
33%
d)CO2
Q.23.
If the central atom in a certain molecule has two lone pairs and three bond pairs, the shape of the molecule could be
-
0%
a) T shape
-
100%
b) trigonal planar
-
0%
c) Trigonal bipyramidal
-
0%
d) distorted tetrahedral
Q.24.
Which of the following bonds is strongest
-
0%
a)F - F
-
0%
b) I - I
-
50%
c)Cl - Cl
-
50%
d)Br - Br
Q.25.
Which of the following molecules will have polar bonds but zero dipole moment
-
0%
a) O2
-
50%
b) CHCl3
-
0%
c)CF4
-
50%
d)none of these
Q.26.
The pair of molecules having identical geometry is
-
0%
a)BCl3 , PCl3
-
0%
b) BF3, NF3
-
50%
c)CCl4 , CH4
-
50%
d)CHCl3, CH3Cl
Q.27.
Which of the following has one loan pair of electrons on central atom
-
0%
a) H2
-
50%
b) CH4
-
50%
c) NH4-
-
0%
d) NCl3
Q.28.
From among the following triatomic species, the least angle around the central atom is in
-
0%
a)O3
-
0%
b) I3-
-
50%
c)NO2-
-
50%
d)H2S
Q.29.
Which of the following compound has dipole moment approximately equal to that of chlorobenzene
-
0%
a) o-Dichloro benzene
-
50%
b) m-Dichlorobenzene
-
0%
c)p-dichlorobenzne
-
50%
d)p-Chloronitrobenzene
Q.30.
The bond angle in H2S is
-
0%
a) > NH3
-
0%
b) same as BeCl2
-
33%
c)> H2Se < H2
-
67%
d)same as in CH4
Explanation
