EASY
11th CBSE
IMPORTANT
Earn 100

Among the following compounds, the one that is most reactive towards electrophilic nitration is

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Important Questions on Hydrocarbons

MEDIUM
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?
MEDIUM
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?
MEDIUM
11th CBSE
IMPORTANT
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

Question Image

MEDIUM
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?
MEDIUM
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 13 - Hydrocarbons>Competition Focus>Q IV
1,4-Dimethyl benzene on heating with anhydrous AlCl3 and HCl produces
EASY
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 13 - Hydrocarbons>Competition Focus>Q IV
The reaction of toluene with Cl2 in the presence of FeCl3 gives predominantly
EASY
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 13 - Hydrocarbons>Competition Focus>Q IV
Toluene reacts with halogen in the presence of Iron(III) chloride giving ortho- and para-halocompounds. The reaction is
HARD
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 13 - Hydrocarbons>Competition Focus>Q IV
In a compound Question Image electrophilic substitution has occurred. The substituent -E  are -methyl, -CH2Cl, -CCl3 and -CHCl2. The correct increasing order towards electrophilic substitution is