281.

Friedel-Craft's reaction using MeCl and anhydrous AlCl₃ will take place most efficiently with

• benzene

• nitrobenzene

• acetophenone

• toluene

Under identical conditions, the S_N1 reaction will occur most efficiently with

• tert-butyl chloride

• 1-chlorobutane

• 2-methyl-1-chloropropane

• 2-chlorobutane

An equimolar mixture of toluene and chlorobenzene is treated with a mixture of conc.H₂SO₄ and cone. HNO₃. Indicate the correct statement from the following.

• p-nitrotoluene is formed in excess

• equimolar amounts of p-nitrotoluene and p-nitrochlorobenzene are formed

• p-nitrochlorobenzene is formed in excess

• m-nitrochlorobenzene is formed in excess

Among the following carbocations:
Ph₂C⁺CH₂Me (I), PhCH₂CH₂CH⁺Ph (II),Ph₂CHCH⁺Me (III) and Ph₂C(Me)CH₂ (IV), the order of stability is

• IV > II > I > III

• I > II > III > IV

• II > I > IV > III

• I > IV > III > II

The major product obtained in the reaction

The reaction of toluene with chlorine in presence of ferric chloride gives predominatly

• benzoyl chloride

• m - chlorotoluene

• benzyl chloride

• o- and p - chlorotoluene

In benzene, the triple bond consists of

• one sp-sp sigma bond and two p-p pi bonds

• two sp-sp sigma bonds and one p-p pi bond

• one sp²-sp² sigma bond, one p-p pi bond

• one sp²-sp² sigma bond, one sp²-sp² pi bond and one p-p pi bond

A and B respectively are

• Both 

• Both 

• 

• 

Which of the following compounds cannot be prepared singly by the Wurtz reaction?

• C₂H₆

• (CH₃)₂CHCH₃

• CH₃CH₂CH₂CH₃

• All of the above can be prepared

The product Y is

• p-chloro nitrobenzene

• o-chloro nitrobenzene

• m-chloro nitrobenzene

• o, p-dichloro nitrobenzene