Tuesday, March 17, 2009

CHEMISTRY OF CARBOHYDRATES

1. Number of asymmetric carbon atom in glucose is:
A. One
B. Two
C. Three
D. Four

Answer: D. Four

2. Beta-1, 4-Glycosidic bond is present in:
A. Maltose
B. Lactose
C. Sucrose
D. None of the above.

Answer: B. Lactose

3. Number of stereoisomers of glucose is:
A. 4
B. 8
C. 16
D. None of the above

Answer: C.16

4. A homopolysaccharide made up of fructose is:
A. Glycogen
B. Dextrin
C. Cellulose
D. Inulin

Answer: D. Inulin

5. Aglycone portion in methyl glucoside is:
A. Glucose
B. Methanol
C. Both of the above
D. Neither of the above

Answer: B. Methanol

6. Identical osazones are formed by:
A. Glucose and Fructose
B. Glucose and Mannose
C. Mannose and Fructose
D. All the 3 pairs

Answer: D. All the 3 pairs

7. Maltose can be formed by hydrolysis of:
A. Strach
B. Dextrin
C. Glycogen
D. All of the above

Answer: D. All of the above

8. Alpha-1, 6-Glycosidic bond is not present in:
A. Glycogen
B. Dextrin
C. Amylose
D. Amylopectin

Answer: C. Amylose

9. Alpha-D-Glucuronic acid is present in:
A. Hyaluronic acid
B. Chondrointin sulphate
C. Heparin
D. All of the above

Answer: C. Heparin

10. Monosaccharides can be seperated by:
A. Electrophoresis
B. Chromotography
C. Salting out
D. None of the above

Answer: B. Chromotography

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