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Multiple-choice questions- Chemistry of carbohydrates- Revision- Set-2
Q.1- Which of the following is not a disaccharide?
a) Hyaluronic acid                                           Â
b) Maltose
c) Lactose                                         Â
d) Sucrose                                                       Â
Q.2- What is the molecular formula of Glucose?
a) CH3OHÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
b) C12H22O11
c) C6H1206 Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
d)Â C6H12O5 Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
Q.3-Sucrose is composed of which two sugars?
a) Glucose and Glucose                              Â
b) Glucose and Fructose
c) Glucose and Galactose                          Â
d) Fructose and Galactose                         Â
Q.4- In which of the following forms Glucose is stored in plants?
a) Starch                                           Â
b) Dextrins
c) Glycogen                                      Â
d) Cellulose                                      Â
Q.5-Which out of the following is a carbohydrate with no nutritional value?
a) Glycogen                                     Â
b) Starch
c) Dextrin                                                         Â
d) Cellulose                                                      Â
Q.6- Choose a sugar out of the following that is non- reactive to Seliwanoff reagent?
a) Sucrose                                        Â
b) Fructose
c) Inulin                                                                             Â
d) Ribose                                                           Â
Q.7- Choose a keto triose-
a) Glyceraldehyde                                        Â
b) Dihydroxyacetone
c) Erythrose                                                     Â
d) Arabinose                                                    Â
Q.8- A pentose sugar present in the heart muscle is-
a) Xylose                                           Â
b) Xylulose
c) Lyxose                                          Â
d) Aldose                                            Â
Q.9- d -Glucose and l- Glucose are-
a) Stereoisomers                                        Â
b) Anomers
c) Keto- Aldose Isomers                             Â
d) Optical isomers                                          Â
Q.10- All the following tests are positive for Lactose except-
a) Benedict                                                      Â
b) Barfoed
c) Molisch                                                         Â
d) Osazone                                       Â
Q.11- Glucose can have — isomers due to the presence of 4 asymmetric carbon atoms-
a) 4Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
b) 2
c) 12Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
d) 16Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
Q.12- Fructose and Ribulose are-
a) Epimers                                                        Â
b) Anomers
c) Ketoses                                         Â
d) Ketose- Aldose isomers                          Â
Q.13- The compounds having the same structural formula but differing in configuration around one carbon atom are called-
a) Optical isomers                                         Â
b) Anomers
c) Stereoisomers                                          Â
d) Epimers                                        Â
Q.14- What does the following equation represent?
α-D Glucose +112ο→+52.5 ο → +19 ο β- D glucose
a) Stereoisomerism                                     Â
b) Optical isomerism
c) Mutarotation                                             Â
d) Epimerization                                             Â
Q.15- The carbohydrate of honey is
a) Fucose                                          Â
b) Maltose
c) Lactose                                          Â
d) Fructose                                                       Â
Q.16- Mannonic acid is a-
a) Sugar acid                                                    Â
b) Deoxy sugar    Â
c) Amino sugar                                               Â
d) Sugar alcohol                                              Â
Q.17- Which of the following is not a monosaccharide with 5 carbon atoms?
a) Arabinose                                                   Â
b) Trehalose
c) Xylulose                                                       Â
d) Ribulose                                       Â
Q.18- Which of the following gives a brown color on reaction with iodine?
a) Starch                                           Â
b) Glycogen
c) Dextrin                                         Â
d) Cellulose                                      Â
Q.19-Invert sugar is-
a) Starch                                           Â
b) Fructose
c) Glucose                                        Â
d) Hydrolytic product of Sucrose             Â
Q.20- Which out of the following is a structural homopolysaccharide?
a) Hyaluronic acid                                           Â
b) Chitin
c) Inulin                                              Â
d) Starch                            Â
Key to Answers
1) -a, Â 2)-c, 3)-b, 4)-a, 5) -d, 6)- d, 7)- b, 8)-c, 9)-d, 10)- b,11) -d, 12)-c, 13)-d, 14)- c,15)-d, 16)-a,17)-b, 18)- b, 19)- d, 20)- b.
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