The compound, which give a positive ninhydrin test and a negative Benedict's solution test, is
a monosaccharide
a disaccharide
a lipid
a protein
Which of the following can absorb over 90% of its own mass of water and also does not stick to wounds?
Saran
Thiokol
Rayon
Gun cotton
Which of the following is a trisaccharide ?
Stachyrose
Sucrose
Raffinose
Ribose
C.
Raffinose
On hydrolysis stachyrose gives four, sucrose gives two raffinose gives three and ribose gives no molecule, of monosaccharides. Thus, only raffinose is a trisaccharide.
C18H32O16 + H2O → 3C6H12O6
During conversion of glucose into glucose cyanohydrin, which functional group/atom of glucose is replaced?
Hydrogen
Aldehydic group
Primary alcoholic group
Secondary alcoholic, group