22785.Which one of the following compounds shows the presence of intramolecular hydrogen bond?
H2O2
HCN
Cellulose
Concentrated acetic acid
22786.Glucose on oxidation with bromine water yields gluconic acid. This reaction confirms presence of
six carbon atoms linked in straight chain
secondary alcoholic group in glucose
aldehyde group in glucose
primary alcoholic group in glucose
22787.The presence or absence of hydroxyl group on which carbon atom of sugar differentiates RNA and DNA?
1st
2nd
3rd
4th
22790.The pyrimidine bases present in DNA are
cytosine and adenine
cytosine and guanine
cytosine and thymine
cytosine and uracil
22791.The reason for double helical structure of DNA is operation of
dipole–dipole interaction
hydrogen bonding
electrostatic attractions
van der Waals’ forces
22792.Glycogen is
a polymer of β–D–glucose units
a structural polysaccharide
structurally very much similar to amylopectin
structurally similar to amylopectin but extensively branched
22793.Which of the following compounds can be detected by Molisch’s test:
Nitro compounds
Sugars
Amines
Primary alcohols