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11th CBSE
IMPORTANT
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Benzene reacts with I2 in the presence of which of the following to give iodobenzene?

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Important Questions on Hydrocarbons

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11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 13 - Hydrocarbons>Competition Focus>Q IV
Aromatic electrophilic substitution reaction that is reversible is
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11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 13 - Hydrocarbons>Competition Focus>Q IV

The compound X in the following reaction is

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11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 13 - Hydrocarbons>Competition Focus>Q IV
Which one of the following undergoes nitration most readily?
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11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 13 - Hydrocarbons>Competition Focus>Q IV
Among the following compounds, the one that is most reactive towards electrophilic nitration is
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11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 13 - Hydrocarbons>Competition Focus>Q IV
Which one of the following has highest melting point?
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11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 13 - Hydrocarbons>Competition Focus>Q IV
Chlorobenzene on treatment with sodium in dry ether gives diphenyl. Name of the reaction is?
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11th CBSE
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Pradeep's New Course CHEMISTRY Vol.II>Chapter 13 - Hydrocarbons>Competition Focus>Q IV

The following desulphonation reaction takes place with the intermediate formation of

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11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 13 - Hydrocarbons>Competition Focus>Q IV
The electrophile, E+ attacks the benzene ring to generate the intermediate σ-complex. Of the following, which σ-complex is of lowest energy?