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Aromatic Hydrocarbons - 2
1.
The molecular formula of benzene indicates that it is highly ___________ compound.
a) Right
b) Unsaturated
c) Elemental
d) Equal
2.
Benzene gives addition reactions with __________ and _____________.
a) Conjugated, isolated
b) Aroma, Fragrant
c) Benzene, Benzene
d) Hydrogen, Halogen
3.
Benzen gives substitution reaction with ___________ & _____________.
a) HNO
3
(Conc.) and H
2
SO
4
(Conc.)
b) 1.397Ao &1.09Ao
c) Benzene sulphoric acid
d) Resonance structure
4.
Hexagonal structure of benzene was confirmed by ___________ technique.
a) Alkyl
b) SP2
c) Halogen
d) X-Ray
5.
All the bond angles in benzene are of _______________.
a) 130
o
b) 120
o
c) 140
o
d) 160
o
6.
All C-C & C-H bond lengths are ___________ & ______________ respectively.
a) V
2
O
5
b) C
6
H
6
c) HNO
3
(Conc.) and H
2
SO
4
(Conc.)
d) 1.397Ao &1.09Ao
7.
Each carbon in benzene ring is ________________ hybridzed.
a) Alkyl
b) SP2
c) C
6
H
6
d) H
2
SO
4
(Conc.)
8.
2pz orbital in benzene carbon remain at ______________ angle to SP2 orbital.
a) SP2
b) Equal
c) Right
d) Benzene
9.
The extraordinary stability of benzene is due to _______________.
a) Conjugated
b) Resonance structure
c) Benzene sulphoric acid
d) Delocalization of electron
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