NEET BIOLOGY

Detailed explanation-1: -The primary application of Benedict’s test is to detect the presence of simple carbohydrates in an unidentified analyte. This test can be used to check for reducing sugars that hold free aldehyde or ketone functional groups. The reducing sugar can be either a monosaccharide or a disaccharide.

Detailed explanation-2: -Benedict’s solution can be used to test for the presence of glucose in urine. Some sugars such as glucose are called reducing sugars because they are capable of transferring hydrogens (electrons) to other compounds, a process called reduction.

Detailed explanation-3: -Benedict’s solution is blue but, if simple carbohydrates are present, it will change colour – green/yellow if the amount is low and red if it is high.

Detailed explanation-4: -Benedict’s reagent is used in a test (Benedict’s test) commonly used to check for the presence of reducing sugar(s), however other reducing substances also give a positive reaction. This includes all monosaccharides and many disaccharides, including lactose and maltose.

Detailed explanation-5: -A positive test is a dark red precipitate and is evidence of a reducing monosaccharide. In Seliwanoff’s test, a dehydration reaction is involved. Seliwanoff’s reagent contains a non-oxidizing acid (HCl) and resorcinol.