NCERT · Class 12 · Chemistry · BiomoleculesWhat happens when D-glucose reacts with (i) Hydroxylamine (NH2OH) and (ii) Concentrated Nitric acid (HNO3)?
Step-by-Step Solution
When D-glucose reacts with hydroxylamine (NH2OH), the carbonyl aldehyde group (-CHO) condenses to form glucose oxime [CHO=NOH-(CHOH)4-CH2OH], confirming the presence of a carbonyl group in glucose. When D-glucose is oxidized with concentrated nitric acid (HNO3), both the aldehyde group (-CHO) at C-1 and the primary alcoholic group (-CH2OH) at C-6 are oxidized to carboxyl groups (-COOH), forming saccharic acid (dicarboxylic acid).
💡 Study Guide: This question tests core syllabus concepts from Biomolecules. For formulas, key summaries, and mock exam reference guides, read the full Biomolecules Revision Notes.