Which of the following will be most readily dehydrated under acidic conditions ?
A.
β - hydroxy aldehydes or β - hydroxy ketones (i.e. , aldol) readily dehydrated under acidic condition to give α, , β - unsaturated aldehyde or ketone .
Absolute alcohol is prepared by :
vacuum distillation
azeotropic distillation
steam distillation
None of the above
Which of the following compounds is resistant to nucleophilic attack by hydroxyl ion ?
Methylacetate
Acetonitrile
Acetamide
Diethyl ether
Ethyl amine reacts with nitrous acid to form :
C2H5OH
C2H5OH , N2 , H2O
C2H5N2+Cl-
C2H5NHOH , NH3
Aldehyde which is formed during photosynthesis of plants is :
methanal
acetaldehyde
propanal
phenylmethanal