BCH 211 PAST INCOURSES AND QUIZZES COLLATION
1. Water is ______
A. Nucleophilic
B. Electrophillic
C. Non-polar
D. Low dielectric constant
E. Not amphoteric
2. Acids dissociate into ________
A. Hydrogen and Hydroxonium ions
B. Hydroxide and Hydroxonium ion
C. Hydroxonium and Hydrogen ion
D. Superoxide and Hydroxonium ion
E. Hydroxonium and Hydrogen ions
3. The angle between hydrogen ions in water is _____
A. 103o
B. 105o
C. 106o
D. 104o
E. 103.5o
4. pH is equal to pKa when the ratio of base to acid is ___
A. 1:10
B. 1:1
C. 1:100
D. 1:4
E. 1:5
5. The molar concentration of pure water is _______
A. 55.56M
B. 56.55M
C. 50.56M
D. 55.00M
E. 56.00M
6. The simplest carbohydrate is _______
A. Glyceraldehyde
B. Glucose
C. Fructose
D. Mannose
E. Galactose
7. A monosaccharide with a ketone group is
A. Aldehyde
B. Ester
C. Aldose
D. Ketose
, E. Amide
8. Enantiomers are ____
A. Mirror images
B. Not stereoisomers
C. Differing spatial arrangements
D. Have the same number of chiral centre
E. Are asymmetric carbon atoms
9. Ribose sugar is component of ____
A. Halogens
B. DNA
C. RNA
D. Amides
E. Esters
10. Hydrogen bond rupture require _______
A. 5.4Kcal/mol of heat
B. 4.5Kcal/mol of heat
C. 6.0Kcal/mol of heat
D. 5.7Kcal/mol of heat
E. 6.5Kcal/mol of heat
11. The hydrogen bonds in water have a half-life of
A. 1 microsecond
B. 2 microsecond
C. 1o microsecond
D. 6 microsecond
E. 7 microsecond
12. The polysaccharide found in the exoskeleton of invertebrates is
A. Pectin
B. Leptin
C. Cellulose
D. Chitin
E. Chrondotin
13. The linkages in glycogen are
A. α 1→4
B. β 1→3
C. α 1→2
D. β 1→6
E. α 1→3
14. An epimer pair is
A. Glucose and Fructose
B. Fructose and Mannose
C. Galactose and Glucose
D. Mannose and Glucose
, E. Ribose and Mannose
15. The difference between ribose and deoxyribose is the absence of oxygen on carbon number
A. 4
B. 5
C. 2
D. 3
E. 1
16. The epimerization around carbon 4 convert glucose to
A. Galactose
B. Mannose
C. Fructose
D. Fucose
E. Sedoheptalose
17. The general formula of carbohydrates is
A. (CHO)n
B. (CH2O)n
C. (C2H2O)n
D. (CHO2)n
E. (CHO)2n
18. The solvent with the highest polarity is
A. Kerosene
B. Ethanol
C. Chloroform
D. Benzene
E. Petroleum ether
19. The pH when the ratio of acid to base is 1:10 is
A. pKa + 4
B. pKa + 5
C. pKa + 3
D. pKa + 2
E. pKa + 1
20. The linkages in lactose are
A. α 1→4
B. β 1→3
C. 1→6
D. β 1→4
E. α 1→3
1. Water is ______
A. Nucleophilic
B. Electrophillic
C. Non-polar
D. Low dielectric constant
E. Not amphoteric
2. Acids dissociate into ________
A. Hydrogen and Hydroxonium ions
B. Hydroxide and Hydroxonium ion
C. Hydroxonium and Hydrogen ion
D. Superoxide and Hydroxonium ion
E. Hydroxonium and Hydrogen ions
3. The angle between hydrogen ions in water is _____
A. 103o
B. 105o
C. 106o
D. 104o
E. 103.5o
4. pH is equal to pKa when the ratio of base to acid is ___
A. 1:10
B. 1:1
C. 1:100
D. 1:4
E. 1:5
5. The molar concentration of pure water is _______
A. 55.56M
B. 56.55M
C. 50.56M
D. 55.00M
E. 56.00M
6. The simplest carbohydrate is _______
A. Glyceraldehyde
B. Glucose
C. Fructose
D. Mannose
E. Galactose
7. A monosaccharide with a ketone group is
A. Aldehyde
B. Ester
C. Aldose
D. Ketose
, E. Amide
8. Enantiomers are ____
A. Mirror images
B. Not stereoisomers
C. Differing spatial arrangements
D. Have the same number of chiral centre
E. Are asymmetric carbon atoms
9. Ribose sugar is component of ____
A. Halogens
B. DNA
C. RNA
D. Amides
E. Esters
10. Hydrogen bond rupture require _______
A. 5.4Kcal/mol of heat
B. 4.5Kcal/mol of heat
C. 6.0Kcal/mol of heat
D. 5.7Kcal/mol of heat
E. 6.5Kcal/mol of heat
11. The hydrogen bonds in water have a half-life of
A. 1 microsecond
B. 2 microsecond
C. 1o microsecond
D. 6 microsecond
E. 7 microsecond
12. The polysaccharide found in the exoskeleton of invertebrates is
A. Pectin
B. Leptin
C. Cellulose
D. Chitin
E. Chrondotin
13. The linkages in glycogen are
A. α 1→4
B. β 1→3
C. α 1→2
D. β 1→6
E. α 1→3
14. An epimer pair is
A. Glucose and Fructose
B. Fructose and Mannose
C. Galactose and Glucose
D. Mannose and Glucose
, E. Ribose and Mannose
15. The difference between ribose and deoxyribose is the absence of oxygen on carbon number
A. 4
B. 5
C. 2
D. 3
E. 1
16. The epimerization around carbon 4 convert glucose to
A. Galactose
B. Mannose
C. Fructose
D. Fucose
E. Sedoheptalose
17. The general formula of carbohydrates is
A. (CHO)n
B. (CH2O)n
C. (C2H2O)n
D. (CHO2)n
E. (CHO)2n
18. The solvent with the highest polarity is
A. Kerosene
B. Ethanol
C. Chloroform
D. Benzene
E. Petroleum ether
19. The pH when the ratio of acid to base is 1:10 is
A. pKa + 4
B. pKa + 5
C. pKa + 3
D. pKa + 2
E. pKa + 1
20. The linkages in lactose are
A. α 1→4
B. β 1→3
C. 1→6
D. β 1→4
E. α 1→3
