Waxes are esters of
glycerol
long chain alcohols
glycerol and fatty acid
long chain alcohols and long chain fatty acids
The number of disulphide linkages present in insulin are
1
2
3
4
B.
2
Insulin is composed of two peptide chains referred to as the chain A and chain B. A chain of 21 residues and B chain of 30 residues are cross-linked by two disulphide bridges. An additional disulphide bridge is also formed within the A chain.
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
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
Which of the following organic compounds answers to both iodoform test and Fehling's test?
Ethanol
Methanal
Ethanal
Propanone