Carbohydrates Classification D L Configuration
High-Yield Trend
Questions 7 MCQs
Which one of the following does not exhibit the phenomenon of mutarotation?
1. (+) Sucrose
2. (+) Lactose
3. (+) Maltose=
4. (-) Fructose
Which one of the following statements is not true regarding (+) lactose?
| 1. | (+) lactose is a \beta -glycoside and a molecule of D(+) galactose |
| 2. | (+) lactose is a reducing sugar and does not exhibit mutarotation |
| 3. | (+) lactose, C 12 H 22 O 11 contains 8-0 H groups |
| 4. | On hydrolysis (+) lactose gives equal amount of D(+) glucose and D(+) galactose |
Sucrose can be formed by:
1. \alpha –D–galactopyranose and \alpha –D–glucopyranose
2. \alpha –D–glucopyranose and \beta –D–fructofuranose
3. \beta –D–galactopyranose and \alpha –D–fructofuranose
4. \alpha –D–galactopyranose and \beta –D–fructopyranose
The correct corresponding order of names of four aldoses with configuration given below respectively, is:
1. L-erythrose, L-threose, L-erythrose, D-threose
2. D-threose, D-erythrose, L-threose, L-erythrose
3. L-erythrose, L-threose, D-erythrose, D-threose
4. D-erythrose, D-threose, L-erythrose, L-threose
Which of the following statement is not true about glucose?
1. It is an aldohexose.
2. It contains five hydroxyl groups.
3. It is a reducing sugar.
4. It is an aldopentose.
A. Tollen's reagent
B. Schiff's reagent
C.
D.
E.
Choose the correct option:
| 1. | and | 2. | and |
| 3. | and | 4. | and |
1. Maltose
2. Sucrose
3. D-Glucose
4. D-Fructose