Which of the following cannot reduce Fehling solution ?
HCOOH
H3CCOOH
HCHO
H3CCHO
B.
H3CCOOH
CH3COOH (acetic acid) cannot reduce Fehling solution while HCOOH , HCHO and CH3CHO reduce Fehling solution due to the presence of -CHO group .
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