05. Aromaticity
GENERAL ORGANIC CHEMISTRY

232325 In the following compounds
original image
which is the correct pair of aromatic compound?

1 I, III and IV
2 I and II
3 III and IV
4 I and III
GENERAL ORGANIC CHEMISTRY

232326 Which one of the following is aromatic?

1 Cyclopentadienyl cation
original image
It is not a aromatic compound because it has $4 \pi$ electron and does not follow Huckel's rule.
2 Cyclo-octatetra-ene
original image
It is also an anti-aromatic compound because it does follow Huckel's rule is $(4 n+2) \pi e^{-}$.
original image
It is an aromatic compound because one carbon atom is $\mathrm{sp}^{3}$ hybridized so it also does not follow criteria of aromaticity.
original image
It is a aromatic compound because it follow Huckel's rule and having $(4 n+2) \pi$ electrons where, $\mathrm{n}=0,1,2,3, \ldots \ldots$
3 Cycloheptatriene
4 Cycloheptatrienyl cation
GENERAL ORGANIC CHEMISTRY

232327 Among the following, the non-aromatic heterocyclic compound is

1 piperidine
2 pyrrole
3 furan
4 pyridine
GENERAL ORGANIC CHEMISTRY

232330 Cycloheptatrienyl cation is

1 Non-benzenoid and non-aromatic
2 Non-benzenoid and aromatic
3 Benzenoid and non-aromatic
4 Benzenoid and aromatic
5 Non-benzenoid and anti-aromatic
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GENERAL ORGANIC CHEMISTRY

232325 In the following compounds
original image
which is the correct pair of aromatic compound?

1 I, III and IV
2 I and II
3 III and IV
4 I and III
GENERAL ORGANIC CHEMISTRY

232326 Which one of the following is aromatic?

1 Cyclopentadienyl cation
original image
It is not a aromatic compound because it has $4 \pi$ electron and does not follow Huckel's rule.
2 Cyclo-octatetra-ene
original image
It is also an anti-aromatic compound because it does follow Huckel's rule is $(4 n+2) \pi e^{-}$.
original image
It is an aromatic compound because one carbon atom is $\mathrm{sp}^{3}$ hybridized so it also does not follow criteria of aromaticity.
original image
It is a aromatic compound because it follow Huckel's rule and having $(4 n+2) \pi$ electrons where, $\mathrm{n}=0,1,2,3, \ldots \ldots$
3 Cycloheptatriene
4 Cycloheptatrienyl cation
GENERAL ORGANIC CHEMISTRY

232327 Among the following, the non-aromatic heterocyclic compound is

1 piperidine
2 pyrrole
3 furan
4 pyridine
GENERAL ORGANIC CHEMISTRY

232330 Cycloheptatrienyl cation is

1 Non-benzenoid and non-aromatic
2 Non-benzenoid and aromatic
3 Benzenoid and non-aromatic
4 Benzenoid and aromatic
5 Non-benzenoid and anti-aromatic
GENERAL ORGANIC CHEMISTRY

232325 In the following compounds
original image
which is the correct pair of aromatic compound?

1 I, III and IV
2 I and II
3 III and IV
4 I and III
GENERAL ORGANIC CHEMISTRY

232326 Which one of the following is aromatic?

1 Cyclopentadienyl cation
original image
It is not a aromatic compound because it has $4 \pi$ electron and does not follow Huckel's rule.
2 Cyclo-octatetra-ene
original image
It is also an anti-aromatic compound because it does follow Huckel's rule is $(4 n+2) \pi e^{-}$.
original image
It is an aromatic compound because one carbon atom is $\mathrm{sp}^{3}$ hybridized so it also does not follow criteria of aromaticity.
original image
It is a aromatic compound because it follow Huckel's rule and having $(4 n+2) \pi$ electrons where, $\mathrm{n}=0,1,2,3, \ldots \ldots$
3 Cycloheptatriene
4 Cycloheptatrienyl cation
GENERAL ORGANIC CHEMISTRY

232327 Among the following, the non-aromatic heterocyclic compound is

1 piperidine
2 pyrrole
3 furan
4 pyridine
GENERAL ORGANIC CHEMISTRY

232330 Cycloheptatrienyl cation is

1 Non-benzenoid and non-aromatic
2 Non-benzenoid and aromatic
3 Benzenoid and non-aromatic
4 Benzenoid and aromatic
5 Non-benzenoid and anti-aromatic
GENERAL ORGANIC CHEMISTRY

232325 In the following compounds
original image
which is the correct pair of aromatic compound?

1 I, III and IV
2 I and II
3 III and IV
4 I and III
GENERAL ORGANIC CHEMISTRY

232326 Which one of the following is aromatic?

1 Cyclopentadienyl cation
original image
It is not a aromatic compound because it has $4 \pi$ electron and does not follow Huckel's rule.
2 Cyclo-octatetra-ene
original image
It is also an anti-aromatic compound because it does follow Huckel's rule is $(4 n+2) \pi e^{-}$.
original image
It is an aromatic compound because one carbon atom is $\mathrm{sp}^{3}$ hybridized so it also does not follow criteria of aromaticity.
original image
It is a aromatic compound because it follow Huckel's rule and having $(4 n+2) \pi$ electrons where, $\mathrm{n}=0,1,2,3, \ldots \ldots$
3 Cycloheptatriene
4 Cycloheptatrienyl cation
GENERAL ORGANIC CHEMISTRY

232327 Among the following, the non-aromatic heterocyclic compound is

1 piperidine
2 pyrrole
3 furan
4 pyridine
GENERAL ORGANIC CHEMISTRY

232330 Cycloheptatrienyl cation is

1 Non-benzenoid and non-aromatic
2 Non-benzenoid and aromatic
3 Benzenoid and non-aromatic
4 Benzenoid and aromatic
5 Non-benzenoid and anti-aromatic