Waxes are esters of

• glycerol

• long chain alcohols

• glycerol and fatty acid

• long chain alcohols and long chain fatty acids

Amines behave as

• Lewis acid

• Lewis base

• aprotic acid

• neutral compound

The chemical name of anisole is

• ethanoic acid

• methoxy benzene

• propanone

• acetone

The number of disulphide linkages present in insulin are

• 1

• 2

• 3

• 4

Among the following, which is least acidic?

• phenol

• o-cresol

• p-nitrophenol

• p-chlorophenol

Anisole can be prepared by the action of methyl iodide on sodium phenate. The reaction is called

• Wurtz 's reaction

• Williamson's reaction

• Fittig's reaction

• Etard's reaction

Catalytic dehydrogenation of a primary alcohol gives a

• secondary alcohol

• aldehyde

• ketone

• ester

The compound on dehydrogenation gives a ketone. The original compound is

• primary alcohol 

• secondary alcohol

• tertiary alcohol

• carboxylic acid

The monomers of buna-S rubber are

• vinyl chloride and sulphur

• butadiene

• styrene and butadiene

• isoprene and butadiene

60.

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

• Ethanol

• Methanal

• Ethanal

• Propanone