Carbohydrates Part 1
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Carbohydrates are polyhydroxy aldeshydes or polyhydroxy ketoses.
- 1.The general formula of monosaccharides is
- A.
CnH2nOn
- B.
C2nH2On
- C.
CnH2O2n
- D.
CnH2nO2n
- 2.The general formula of polysaccharides is
- A.
(C6H10O5)n
- B.
(C6H12O5)n
- C.
(C6H10O6)n
- D.
(C6H10O6)n
- 3.The aldose sugar is
- A.
Glycerose
- B.
Ribulose
- C.
Erythrulose
- D.
Dihydoxyacetone
- 4.A triose sugar is
- A.
Glycerose
- B.
Ribose
- C.
Erythrose
- D.
Fructose
- 5.A pentose sugar is
- A.
Dihydroxyacetone
- B.
Ribulose
- C.
Erythrose
- D.
Glucose
- 6.The pentose sugar present mainly in the heart muscle is
- A.
Lyxose
- B.
Ribose
- C.
Arabinose
- D.
Xylose
- 7.Polysaccharides are
- A.
Polymers
- B.
Acids
- C.
Proteins
- D.
Oils
- 8.The number of isomers of glucose is
- A.
2
- B.
4
- C.
8
- D.
16
- 9.Two sugars which differ from one another only in configuration around a single carbon atom are termed
- A.
Epimers
- B.
Anomers
- C.
Optical isomers
- D.
Stereoisomers
- 10.Isomers differing as a result of variations in configuration of the —OH and —H on carbon atoms 2, 3 and 4 of glucose are known as
- A.
Epimers
- B.
Anomers
- C.
Optical isomers
- D.
Steroisomers
- 11.The most important epimer of glucose is
- A.
Galactose
- B.
Fructose
- C.
Arabinose
- D.
Xylose
- 12.
- A.
Stereoisomers
- B.
Epimers
- C.
Anomers
- D.
Keto-aldo pairs
- 13.
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- A.
Optical isomerism
- B.
Mutarotation
- C.
Epimerisation
- D.
D and L isomerism
- 14.Compounds having the same structural formula but differing in spatial configuration are known as
- A.
Stereoisomers
- B.
Anomers
- C.
Optical isomers
- D.
Epimers
- 15.In glucose the orientation of the —H and —OH groups around the carbon atom 5 adjacent to the terminal primary alcohol carbon determines
- A.
D or L series
- B.
Dextro or levorotatory
- C.
α and β anomers
- D.
Epimers
- 16.The carbohydrate of the blood group substances is
- A.
Sucrose
- B.
Fucose
- C.
Arabinose
- D.
Maltose
- 17.Erythromycin contains
- A.
Dimethyl amino sugar
- B.
Trimethyl amino sugar
- C.
Sterol and sugar
- D.
Glycerol and sugar
- 18.A sugar alcohol is
- A.
Mannitol
- B.
Trehalose
- C.
Xylulose
- D.
Rabinose
- 19.The major sugar of insect hemolymph is
- A.
Glycogen
- B.
Pectin
- C.
Trehalose
- D.
Sucrose
- 20.The sugar found in DNA is
- A.
Xylose
- B.
Ribose
- C.
Deoxyribose
- D.
Ribulose
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