NURSING ANM AND GNM

Detailed explanation-1: -The reducing sugars that show positive results with benedict’s solution are glucose, fructose, maltose etc. The correct option is D i.e. sucrose. Additional Information: Sucrose is a disaccharide composed of two monosaccharide molecules that are glucose and fructose.

Detailed explanation-2: -We can use a special reagent called Benedict’s solution to test for simple carbohydrates like glucose. 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-3: -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-4: -Galactose and maltose are monosaccharides which means that they have free aldehyde and ketone groups that can reduce the cupric ions of Benedict’s test. The cuprous ion then reacts with oxygen to form the Cu2O C u 2 O precipitate–positive test for Benedict’s reagent.

Detailed explanation-5: -Benedict’s reagent test or Benedict’s test is used to testing for simple carbohydrates / reducing sugars/ monosaccharides/ disaccharides.