COMEDK 2024 Shift 2 Paper

Let us examine each of the given statements regarding the chemical properties of Glucose.
Statement A: It reacts with Br2(aq) to form Saccharic acid.
This statement is incorrect. Glucose reacts with bromine water to form Gluconic acid, not Saccharic acid. Saccharic acid is formed by the oxidation of glucose with a stronger oxidizing agent like nitric acid.
Statement B: Reacts with Acetic anhydride to form Glucose tetraacetate.
Statement C: Reacts with Hydroxylamine to give Glucose oxime.
This statement is correct. Glucose reacts with hydroxylamine to form an oxime as the hydroxylamine reacts with the aldehyde group present in the glucose.
Statement D: It reacts with ammoniacal AgNO3 to form ammonium salt of Gluconic acid with deposition of silver.
This statement is correct. When glucose is treated with ammoniacal silver nitrate (Tollens' reagent), it reduces the silver nitrate to metallic silver while getting oxidized to gluconic acid, which forms its ammonium salt in the solution.
Therefore, the two incorrect statements are:
Option A: A & B