Reaction of cyclohexanone with dimethylamine in the presence of catalytic amount of an acid forms a compound if water during the reaction is continuously removed. The compound formed is generally known as

• a Schiff’s base

• an enamine

• an imine

• an imine

Elimination of bromine from 2-bromobutane results in the formation of-

• equimolar mixture of 1 and 2-butene

• predominantly 2-butene

• predominantly 1-butene

• predominantly 1-butene

Amongst the following the most basic compound is

• benzylamine

• aniline

• acetanilide

• acetanilide

The reaction



is fastest when X is

• Cl

• NH₂

• OC₂H₅

• OC₂H₅

p-cresol reacts with chloroform in the alkaline medium to give the compound A which adds hydrogen cyanide to form, the compound B. The latter on acidic hydrolysis gives chiral carboxylic acid. The structure of the carboxylic acid is