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11th CBSE
IMPORTANT
Earn 100

Cycloheptatrienyl cation is

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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

The most likely protonation site in the following molecule is 

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11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 13 - Hydrocarbons>Competition Focus>Q IV
Which of the following is an aromatic compound ?
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11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 13 - Hydrocarbons>Competition Focus>Q IV

The total number of aromatic species generated 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

Given:
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The enthalpy of hydrogenation of these compounds will be in the order as

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11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 13 - Hydrocarbons>Competition Focus>Q IV

In the reaction

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The product C is

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11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 13 - Hydrocarbons>Competition Focus>Q IV
What is the electrophile when RCl+AlCl3 are used in Friedel-Crafts reaction?
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11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 13 - Hydrocarbons>Competition Focus>Q IV

In the given reaction

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the product P is

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11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 13 - Hydrocarbons>Competition Focus>Q IV
Treatment of benzene with isobutene in the presence of sulphuric acid gives