(a) Interpretation: The structure of ketotetrose is to be drawn. Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Question

Want to see more full solutions like this?

Answer 1

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 28, Problem 28.1P

Interpretation Introduction

(a)

Interpretation: The structure of ketotetrose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Expert Solution

Answer to Problem 28.1P

The structure of ketotetrose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 1

Figure 1

Explanation of Solution

The name ketotetrose suggests that it is a monosaccharide that contains four carbon atoms and a ketone group. The ketone carbonyl group is present on second carbon atom in ketoses. The structure of ketotetrose is shown in Figure 1.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 2

Figure 1

Conclusion

The structure of ketotetrose is shown in Figure 1.

Interpretation Introduction

(b)

Interpretation: The structure of aldopentose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Expert Solution

Answer to Problem 28.1P

The structure of aldopentose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 3

Figure 2

Explanation of Solution

The name aldopentose suggests that it is a monosaccharide that contains five carbon atoms and an aldehyde group. The aldehyde carbonyl group is present on first carbon atom in aldoses. The structure of aldopentose is shown in Figure 2.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 4

Figure 2

Conclusion

The structure of aldopentose is shown in Figure 2.

Interpretation Introduction

(c)

Interpretation: The structure of aldotetrose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Expert Solution

Answer to Problem 28.1P

The structure of aldotetrose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 5

Figure 3

Explanation of Solution

The name aldotetrose suggests that it is a monosaccharide that contains four carbon atoms and an aldehyde group. The aldehyde carbonyl group is present on first carbon atom in aldoses. The structure of aldotetrose is shown in Figure 3.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 6

Figure 3

Conclusion

The structure of aldotetrose is shown in Figure 3.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Students have asked these similar questions

Show mechanism..don't give Ai generated solution

Don't used Ai solution

Show work. Don't give Ai generated solution

Answer 2

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 28, Problem 28.1P

Interpretation Introduction

(a)

Interpretation: The structure of ketotetrose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Expert Solution

Answer to Problem 28.1P

The structure of ketotetrose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 1

Figure 1

Explanation of Solution

The name ketotetrose suggests that it is a monosaccharide that contains four carbon atoms and a ketone group. The ketone carbonyl group is present on second carbon atom in ketoses. The structure of ketotetrose is shown in Figure 1.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 2

Figure 1

Conclusion

The structure of ketotetrose is shown in Figure 1.

Interpretation Introduction

(b)

Interpretation: The structure of aldopentose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Expert Solution

Answer to Problem 28.1P

The structure of aldopentose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 3

Figure 2

Explanation of Solution

The name aldopentose suggests that it is a monosaccharide that contains five carbon atoms and an aldehyde group. The aldehyde carbonyl group is present on first carbon atom in aldoses. The structure of aldopentose is shown in Figure 2.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 4

Figure 2

Conclusion

The structure of aldopentose is shown in Figure 2.

Interpretation Introduction

(c)

Interpretation: The structure of aldotetrose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Expert Solution

Answer to Problem 28.1P

The structure of aldotetrose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 5

Figure 3

Explanation of Solution

The name aldotetrose suggests that it is a monosaccharide that contains four carbon atoms and an aldehyde group. The aldehyde carbonyl group is present on first carbon atom in aldoses. The structure of aldotetrose is shown in Figure 3.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 6

Figure 3

Conclusion

The structure of aldotetrose is shown in Figure 3.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 28, Problem 28.1P

Interpretation Introduction

(a)

Interpretation: The structure of ketotetrose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Expert Solution

Answer to Problem 28.1P

The structure of ketotetrose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 1

Figure 1

Explanation of Solution

The name ketotetrose suggests that it is a monosaccharide that contains four carbon atoms and a ketone group. The ketone carbonyl group is present on second carbon atom in ketoses. The structure of ketotetrose is shown in Figure 1.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 2

Figure 1

Conclusion

The structure of ketotetrose is shown in Figure 1.

Interpretation Introduction

(b)

Interpretation: The structure of aldopentose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Expert Solution

Answer to Problem 28.1P

The structure of aldopentose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 3

Figure 2

Explanation of Solution

The name aldopentose suggests that it is a monosaccharide that contains five carbon atoms and an aldehyde group. The aldehyde carbonyl group is present on first carbon atom in aldoses. The structure of aldopentose is shown in Figure 2.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 4

Figure 2

Conclusion

The structure of aldopentose is shown in Figure 2.

Interpretation Introduction

(c)

Interpretation: The structure of aldotetrose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Expert Solution

Answer to Problem 28.1P

The structure of aldotetrose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 5

Figure 3

Explanation of Solution

The name aldotetrose suggests that it is a monosaccharide that contains four carbon atoms and an aldehyde group. The aldehyde carbonyl group is present on first carbon atom in aldoses. The structure of aldotetrose is shown in Figure 3.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 6

Figure 3

Conclusion

The structure of aldotetrose is shown in Figure 3.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 28, Problem 28.1P

Interpretation Introduction

(a)

Interpretation: The structure of ketotetrose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Expert Solution

Answer to Problem 28.1P

The structure of ketotetrose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 1

Figure 1

Explanation of Solution

The name ketotetrose suggests that it is a monosaccharide that contains four carbon atoms and a ketone group. The ketone carbonyl group is present on second carbon atom in ketoses. The structure of ketotetrose is shown in Figure 1.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 2

Figure 1

Conclusion

The structure of ketotetrose is shown in Figure 1.

Interpretation Introduction

(b)

Interpretation: The structure of aldopentose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Expert Solution

Answer to Problem 28.1P

The structure of aldopentose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 3

Figure 2

Explanation of Solution

The name aldopentose suggests that it is a monosaccharide that contains five carbon atoms and an aldehyde group. The aldehyde carbonyl group is present on first carbon atom in aldoses. The structure of aldopentose is shown in Figure 2.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 4

Figure 2

Conclusion

The structure of aldopentose is shown in Figure 2.

Interpretation Introduction

(c)

Interpretation: The structure of aldotetrose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Expert Solution

Answer to Problem 28.1P

The structure of aldotetrose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 5

Figure 3

Explanation of Solution

The name aldotetrose suggests that it is a monosaccharide that contains four carbon atoms and an aldehyde group. The aldehyde carbonyl group is present on first carbon atom in aldoses. The structure of aldotetrose is shown in Figure 3.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 6

Figure 3

Conclusion

The structure of aldotetrose is shown in Figure 3.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Chapter 28, Problem 28.1P

Interpretation Introduction

(a)

Interpretation: The structure of ketotetrose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Expert Solution

Answer to Problem 28.1P

The structure of ketotetrose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 1

Figure 1

Explanation of Solution

The name ketotetrose suggests that it is a monosaccharide that contains four carbon atoms and a ketone group. The ketone carbonyl group is present on second carbon atom in ketoses. The structure of ketotetrose is shown in Figure 1.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 2

Figure 1

Conclusion

The structure of ketotetrose is shown in Figure 1.

Interpretation Introduction

(b)

Interpretation: The structure of aldopentose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Expert Solution

Answer to Problem 28.1P

The structure of aldopentose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 3

Figure 2

Explanation of Solution

The name aldopentose suggests that it is a monosaccharide that contains five carbon atoms and an aldehyde group. The aldehyde carbonyl group is present on first carbon atom in aldoses. The structure of aldopentose is shown in Figure 2.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 4

Figure 2

Conclusion

The structure of aldopentose is shown in Figure 2.

Interpretation Introduction

(c)

Interpretation: The structure of aldotetrose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Expert Solution

Answer to Problem 28.1P

The structure of aldotetrose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 5

Figure 3

Explanation of Solution

The name aldotetrose suggests that it is a monosaccharide that contains four carbon atoms and an aldehyde group. The aldehyde carbonyl group is present on first carbon atom in aldoses. The structure of aldotetrose is shown in Figure 3.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 6

Figure 3

Conclusion

The structure of aldotetrose is shown in Figure 3.

Answer 6

Chapter 28, Problem 28.1P

Interpretation Introduction

(a)

Interpretation: The structure of ketotetrose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Expert Solution

Answer to Problem 28.1P

The structure of ketotetrose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 1

Figure 1

Explanation of Solution

The name ketotetrose suggests that it is a monosaccharide that contains four carbon atoms and a ketone group. The ketone carbonyl group is present on second carbon atom in ketoses. The structure of ketotetrose is shown in Figure 1.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 2

Figure 1

Conclusion

The structure of ketotetrose is shown in Figure 1.

Answer 7

Chapter 28, Problem 28.1P

Interpretation Introduction

(a)

Interpretation: The structure of ketotetrose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Answer 8

Expert Solution

Answer to Problem 28.1P

The structure of ketotetrose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 1

Figure 1

Answer 9

Expert Solution

Answer 10

Expert Solution

Answer 11

Expert Solution

Answer 12

Explanation of Solution

The name ketotetrose suggests that it is a monosaccharide that contains four carbon atoms and a ketone group. The ketone carbonyl group is present on second carbon atom in ketoses. The structure of ketotetrose is shown in Figure 1.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 2

Figure 1

Answer 13

Conclusion

The structure of ketotetrose is shown in Figure 1.

Answer 14

Interpretation Introduction

(b)

Interpretation: The structure of aldopentose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Expert Solution

Answer to Problem 28.1P

The structure of aldopentose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 3

Figure 2

Explanation of Solution

The name aldopentose suggests that it is a monosaccharide that contains five carbon atoms and an aldehyde group. The aldehyde carbonyl group is present on first carbon atom in aldoses. The structure of aldopentose is shown in Figure 2.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 4

Figure 2

Conclusion

The structure of aldopentose is shown in Figure 2.

Answer 15

Interpretation Introduction

(b)

Interpretation: The structure of aldopentose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Answer 16

Expert Solution

Answer to Problem 28.1P

The structure of aldopentose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 3

Figure 2

Answer 17

Expert Solution

Answer 18

Expert Solution

Answer 19

Expert Solution

Answer 20

Explanation of Solution

The name aldopentose suggests that it is a monosaccharide that contains five carbon atoms and an aldehyde group. The aldehyde carbonyl group is present on first carbon atom in aldoses. The structure of aldopentose is shown in Figure 2.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 4

Figure 2

Answer 21

Conclusion

The structure of aldopentose is shown in Figure 2.

Answer 22

Interpretation Introduction

(c)

Interpretation: The structure of aldotetrose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Expert Solution

Answer to Problem 28.1P

The structure of aldotetrose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 5

Figure 3

Explanation of Solution

The name aldotetrose suggests that it is a monosaccharide that contains four carbon atoms and an aldehyde group. The aldehyde carbonyl group is present on first carbon atom in aldoses. The structure of aldotetrose is shown in Figure 3.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 6

Figure 3

Conclusion

The structure of aldotetrose is shown in Figure 3.

Answer 23

Interpretation Introduction

(c)

Interpretation: The structure of aldotetrose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Answer 24

Expert Solution

Answer to Problem 28.1P

The structure of aldotetrose is,

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 5

Figure 3

Answer 25

Expert Solution

Answer 26

Expert Solution

Answer 27

Expert Solution

Answer 28

Explanation of Solution

The name aldotetrose suggests that it is a monosaccharide that contains four carbon atoms and an aldehyde group. The aldehyde carbonyl group is present on first carbon atom in aldoses. The structure of aldotetrose is shown in Figure 3.

ORGANIC CHEMISTRY, Chapter 28, Problem 28.1P , additional homework tip 6

Figure 3

Answer 29

Conclusion

The structure of aldotetrose is shown in Figure 3.

Answer 30

Ch. 28 - Prob. 28.1P Ch. 28 - Prob. 28.2P Ch. 28 - Label each stereogenic center as R or S. a. b. c....Ch. 28 - Convert the ball-and-stick model to a Fischer...Ch. 28 - Prob. 28.5P Ch. 28 - Prob. 28.6P Ch. 28 - Prob. 28.7P Ch. 28 - Prob. 28.8P Ch. 28 - Prob. 28.9P Ch. 28 - Prob. 28.10P

(a) Interpretation: The structure of ketotetrose is to be drawn. Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Concept explainers

(a)

Interpretation: The structure of ketotetrose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Answer to Problem 28.1P

Explanation of Solution

(b)

Interpretation: The structure of aldopentose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Answer to Problem 28.1P

Explanation of Solution

(c)

Interpretation: The structure of aldotetrose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Answer to Problem 28.1P

Explanation of Solution

Want to see more full solutions like this?

Chapter 28 Solutions

(a) Interpretation: The structure of ketotetrose is to be drawn. Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Concept explainers

(a) Interpretation: The structure of ketotetrose is to be drawn. Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Answer to Problem 28.1P

Explanation of Solution

(b) Interpretation: The structure of aldopentose is to be drawn. Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Answer to Problem 28.1P

Explanation of Solution

(c) Interpretation: The structure of aldotetrose is to be drawn. Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

Answer to Problem 28.1P

Explanation of Solution

Want to see more full solutions like this?

Chapter 28 Solutions

(a)

Interpretation: The structure of ketotetrose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

(b)

Interpretation: The structure of aldopentose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.

(c)

Interpretation: The structure of aldotetrose is to be drawn.

Concept introduction: A monosaccharide in which aldehyde carbonyl group is present at C1 is called aldose whereas a monosaccharide in which ketone carbonyl group is present at C2 is called ketose.