Which of following statement(s) are correct for Glucose?
(A) Glucose is a monosaccharide sugar
(B) Glucose is an aldohexose and is also known as dextrose.
(C) Glucose can be hydrolyzed.
(D) Glucose is a reducing sugar.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (A), (B) and (D) only
Here is the detailed analysis of each statement based on chemical principles:
(A) Glucose is a monosaccharide sugar
- TRUE. Glucose is a simple sugar that cannot be broken down further into simpler units of carbohydrates.
(B) Glucose is an aldohexose and is also known as dextrose
- TRUE. It is called an aldohexose because it contains six carbon atoms ("hexose") and an aldehyde functional group ("aldo") at Carbon 1.
- It is also commonly referred to as dextrose because it is dextrorotatory, meaning it rotates plane-polarized light to the right.
(C) Glucose can be hydrolyzed
- FALSE. Only complex carbohydrates like disaccharides (e.g., sucrose) or polysaccharides (e.g., starch) can be hydrolyzed into simpler sugars. Since glucose is already a monosaccharide, it cannot be further hydrolyzed.
(D) Glucose is a reducing sugar
- TRUE. Glucose has a free (or potentially free in its cyclic form) aldehyde group at Carbon 1. This allows it to reduce reagents like Fehling's solution or Tollen's reagent, resulting in a positive test for reducing sugars.