Question -
Answer -
D-glucose reacts with hydroxylamine (NH2OH)to form an oxime because of the presence of aldehydic (−CHO) group or carbonylcarbon. This happens as the cyclic structure of glucose forms an open chainstructure in an aqueous medium, which then reacts with NH2OHto give an oxime.
But pentaacetate of D-glucose does not reactwith NH2OH. This is because pentaacetate does not form an openchain structure.