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Hybridisation
1.
Hybridisation involves
co
m
1. Inter mixing of electron s
2. Inter mixing and redistribution of atomic orbitals of only one atom
3. Inter mixing and redistribution of atomic orbitals of different atoms
ed
uc
at
io
n.
4. All of these
2. The s - character in the hybrid orbital of the central atom present in SF6
molecule is
1. 25 %
2. 75 %
3. 40 %
4. 16.66 %
3. The hybridization of Nitrogen in Nitrite ion is
2. sp2
1. sp
3. sp3
4. sp3d
2. sp3d
ks
1. sp3d3
hi
4. Hybridisation of iodine in IF7 molecule is
3. sp3d2
4. dsp2
.s
a
5. The molecule which contains sp3d2 and p orbitals overlapping in it is
2. BrF5
3. ClF3
4. IF7
w
1. PCl5
w
w
6. sp3d hybridisation is not present in
1. PCl5
7.
2. ClF3
3.SeF6
4.XeF2
Linear combination of two hybridised orbitals belonging to two atoms
and each having one electron leads to a
1. Sigma bond only
2. Co-ordinate covalent bond only
3. Pi-bond only
4. Either 1 or 2
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8. Decreasing order of size of various hybrid orbitals is:
1)
sp > sp 2 > sp 3
2)
sp3 > sp 2 > sp
3)
sp 2 > sp > sp 3
4) sp= sp2 = sp3
9.The molecule which contains  sp  sp and sp  p bonds in it is
1. CH3CH3
3
2. CH3CHO
3
3. CH3CH2OH
4. CHCl3
co
m
3
10. The type of hybrid orbitals used by the oxygen atom in Cl2O molecule is
2. sp2
4. dsp2
3. sp
ed
uc
at
io
n.
1. sp3
11. Bond angle between two hybrid orbitals is 180o, s - orbital character of
hybrid orbital is nearly
1.25 %
2.33.33%
3. 16.6 %
4. 50 %
12. Hybridisation of oxygen in hydronium ion is
2.sp2
1. sp
13. The type
3.sp3
4. d sp2
of hybridisation exhibited by carbon in C3O2 [O=C=C=C=O]
hi
is
2. sp3
ks
1. sp
3. sp2
4. None
.s
a
14. In which of the following species the underlined carbon having sp3hybridisation?
CH 3 - COOH
2)
w
w
w
1)
CH 3 CH 2 OH
3)
CH 3 COCH 3
4)
CH 2 = CH - CH 3
15. The ratio of pure orbitals to hybridized orbitals in ethylene is
1) 2: 3
2) 3: 1
3) 1: 1
4) 1: 3
16. Which one of the following is a correct set?
1. H2O, sp3 angular

2
3. NH 4 , dsp , square planar
2. H2O, sp3 linear
4. CH4, d sp2 tetrahedral
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17. What is the hybridisation state of the central atom in the conjugate base
2.sp3
1. sp
18. The hybridisation of N in
CH 3 NH 2
4. d sp2
3. sp3
is
2. sp2
1. sp
3.sp2
co
m
of NH4+ ion?
19. The shape of CH4; SO4-2; PO4-3
3. Angular
3. Tetrahedral
ed
uc
at
io
n.
1. Trigonal planar
4. d sp2
4. Trigonal Bipyramidal
20. sp3 hybrid orbital has
1. 1/4 th s - character
3. 2/3 th s - character
2. 1/2 th s - character
4. 3/4 th s - character
2. sp-sp
ks
1. sp3-sp3
hi
21. Which of the following is the most efficient overlapping?
3. sp3-sp2
4. All
22. The hybridisation of carbon in carbon dioxide molecule is
2. sp
.s
a
1. sp2
3. sp3
4. None
w
23. The hybridisation of central atom is sp3d2 in
w
w
1. PCl5
2.BrF3
3. XeF2
4. BrF5
3.  sp3-s
4.  sp2-p
24. N-H Bond in Ammonia molecule is
1.  s-s
25.
2.  p - p
 sp2  s Bond is present in
1. CH4
2. NH3
3. CCl4
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4. CH2 = CHCl
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26. Molecule which contains 4 bonded pairs and 2 lone pairs of electrons on
the central atom is
1. XeF2
2. CO2
3. XeF4
4. SF6
hybridisation with three lone pairs of electrons
co
m
27. In which of the following molecule, the central atom undergoes sp3d
2. Xenon difluoride
3. Chlorine trifluoride
4. Hydrogen sulphide
ed
uc
at
io
n.
1. Ammonia
28. Molecule having maximum number of lone pairs of electrons on central
atom is
1. PH3
2. H2S
3. CH4
4. BrF5
29. Hybridisation and bond angle in XeF4 is
1) sP3 d2, 90°
2) dsp2, 90°
3) sp3 109°
4) sp3d, 120°
2. 10
3. 9
4. 8
ks
1. 12
hi
30. Number of hybrid orbitals present in a molecule of propene is
.s
a
31. The number of hybrid orbitals in a molecule of Ethyne is
1. 6
2. 4
3. 8
4. 2
w
32. The hybridisation of carbon in diamond, graphite and acetylene are
2. sp,sp2,sp3
3. sp3,sp2,sp
w
w
1. sp3,sp,sp2
4. sp2,sp3,sp
33. The structural formula of a compound is CH3 - CH = C= CH2. The types
of hybridisation at the four carbons from left to right are
1. sp3, sp, sp2, sp3
2. sp2, sp3, sp2, sp
3. sp3, sp2, sp, sp2
4. sp3, sp2, sp2, sp2
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34. As the s - character in a hybrid orbital increases, the bond angle
1. Increases
2. Decreases
3. Remains same
4. Becomes zero
35. A molecule contains two sigma bonds, two Pi bonds and one lone pair of
elecrons in the valence shell of X. The shape of molecule is
2) Angular
3) Tetrahedral
36. Hybridisation noticed in CO2 and CO is
2. dsp2
4. sp2
3. sp
ed
uc
at
io
n.
1. sp3
4) Pyramidal
co
m
1) Linear
37. The compound in which carbon uses sp3 hybridisation for bond
formation
1. H-COOH
2. (NH2)2C=O
3. H-CHO
4. CH3CH2 OH
38. The total number of sp2 hybrid orbitals used in bonding of ethylene
molecule is
2. 6
3. 7
4. 8
hi
1. 5
ks
39. Carbon atoms C2 (CN )4 are : in
.s
a
1) sp hybridized
3) sp and sp2 hybridized
2) sp2 hybridized
4) sp, and sp3 hybridized
w
40. On catalytic hydrogenation, ethylene gives ethane during this reaction
w
w
1. Hybridization of carbon atoms changes from sp2 to sp3
2. Bond angle decreases from1200 to 109.50
3. C-C bond length increases from1.34 A0 to 1.54A0
4. All of these.
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41. For which hybridization, there are two unequal bond angles
1. sp3
2. sp2
3. sp
4. sp3d
2) 120°
3) 109°
4) 90°
42. Bond angle in
1) 180°
2. sp3
1. sp
3. sp2
co
m
43. The hybrid orbital having an equal amount of s and p - characters is
4. sp3d
ed
uc
at
io
n.
44. On hybridisation of one‘s’ and one ‘p’ orbitals we get
1. Two mutually perpendicular orbitals
2. Two orbitals at 180o
3. Four orbitals directed tetrahedrally
4. Three orbitals in a plane
45. Hybridisation in SO2
molecule is
2. sp2
1. sp
3. sp3
4. sp3d
4) 1
5) 2
12) 3
13) 1 14) 2
15) 3
16) 1 17) 2 18) 3 19) 3
22) 2
23) 4 24) 3
25) 4
26) 3 27) 2 28) 2 29) 1 30) 2
36) 3 37) 4 38) 2 39)3 40)4
w
w
w
11) 4
2) 4
21) 1
3) 2
.s
a
1) 2
ks
hi
KEY
31) 2
32) 3
33) 3 34) 1
35) 2
41) 4
42) 3
43) 1
45) 2
44) 2
6) 3
7) 1
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8) 2
9) 3
10) 1
20) 1