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Aromatic Hydrocarbons - 4
1.
The second substitution in benzene ring would give rise isomoric products
a) Four
b) One
c) Three
d) Two
2.
Aromatic hydrocarbons containing two or more benzene rings in their molecules can be divided in to main classes.
a) Three
b) Five
c) Two
d) Four
3.
Benzene was discovered by Michael Faraday in the gas produced by the
a) Frational disllation
b) None of these
c) Destructive Distillation
d) Steam distillation
4.
Molecular mass of benzene determined by the vapour density method is
a) 78.108
b) 74.108
c) 88.052
d) 79.021
5.
Hexagonal structure of benzene was confirmed by
a) HPLC
b) X-Ray
c) NMR
d) Mass
6.
C-H bond lengths in benzene are
a) 1.09A
o
b) 1.34A
o
c) 0.99A
o
d) 1.12A
o
7.
Each carbon in benzene ring is hybridized
a) SP2
b) None of these
c) SP3
d) SP
8.
On hydrogenation benzene liberates energy
a) 358.5KJ/mole
b) 272 KJ/mole
c) 208 KJ/mole
d) 320KJ/mole
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