31.

Brass, bronze and german silver have one common metal . This is :

• Zn

• Fe

• Al

• Cu

Catalytic dehydrogenation of a primary alcohol gives a :

• secondary alcohol

• aldehyde

• ketone

• ester

Dalda is prepared from oils by :

• oxidation

• reduction

• hydrolysis

• distillation

The chemical name of anisole is :

• ethanoic acid

• methoxy benzene

• propanone

• acetone

Waxes are esters of :

• glycerol

• long chain alcohols

• glycerol and fatty acid

• long chain alcohols and long chain fatty acids

Among the following, which is least acidic ?

• phenol

• o-cresol

• p-nitrophenol

• p-chlorophenol

Which of the following organic compounds answers to both iodoform test and Fehling's test ?

• Ethanol

• Methanal

• Ethanal

• Propanone

The IUPAC name of the following compound is 

• propionic anhydride

• dipropanoic anhydride

• ethoxy propanoic acid

• propanoic anhydride

Hinsberg reagent is :

• C₆H₅SO₃H

• C₆H₅NO

• C₆H₅SO₂Cl

• C₆H₅N₂Cl

Acetaldehyde cannot show :

• iodoform test

• Lucas test

• Benedict's test

• Tollen's test