Carbohydrates MCQs || 10th Chemistry Chapter 13

Carbohydrates MCQs || 10th Chemistry Chapter 13

1. What is the general formula of carbohydrates? A) Cn(H2O)n
B) CnH2On
C) CnO2Hn
D) CnHnO2

2. Carbohydrates are synthesized by plants through which process?
A) Respiration
B) Photosynthesis
C) Fermentation
D) Glycolysis

3. Which of the following is a monosaccharide?
A) Starch
B) Sucrose
C) Glucose
D) Cellulose

4. What is the simplest unit of carbohydrates called?
A) Polysaccharide
B) Oligosaccharide
C) Monosaccharide
D) Disaccharide

5. How many carbon atoms do monosaccharides typically have?
A) 1 to 3
B) 3 to 9
C) 10 to 15
D) 16 to 20

6. What is the chemical formula for glucose?
A) C5H10O5
B) C6H12O6
C) C4H8O4
D) C3H6O3

7. What type of sugar is glucose classified as?
A) Aldehyde
B) Ketone
C) Aldohexose
D) Ketohexose

8. Which of the following is a disaccharide?
A) Fructose
B) Sucrose
C) Cellulose
D) Starch

9. What are polysaccharides made up of?
A) Two monosaccharides
B) Hundreds of monosaccharides
C) A single monosaccharide
D) One disaccharide

10. Which carbohydrate is known as a reducing sugar?
A) Sucrose
B) Starch
C) Glucose
D) Cellulose

11. Which of the following is insoluble in water?
A) Monosaccharides
B) Polysaccharides
C) Disaccharides
D) Oligosaccharides

12. Which of the following provides energy to muscles directly?
A) Glucose
B) Fructose
C) Sucrose
D) Lactose

13. What is the main function of dietary fiber in the body?
A) Provide energy
B) Keep bowel functioning properly
C) Increase cholesterol levels
D) Provide nutrients for digestion

14. What condition occurs when sugar levels in the body are too low?
A) Hypoglycemia
B) Hypertension
C) Hyperglycemia
D) Dehydration

15. How much energy does 1 gram of carbohydrates provide?
A) 9 kilojoules
B) 12 kilojoules
C) 17 kilojoules
D) 20 kilojoules

16. What enzyme breaks down starch into glucose?
A) Lipase
B) Amylase
C) Protease
D) Maltase

17. Which of the following is a source of lactose?
A) Sugar beet
B) Honey
C) Milk
D) Cereals

18. Which carbohydrate is found in cereals?
A) Starch
B) Glucose
C) Sucrose
D) Fructose

19. What is the main component of cotton?
A) Starch
B) Cellulose
C) Glucose
D) Maltose

20. Which disaccharide is found in sugar beet?
A) Lactose
B) Sucrose
C) Maltose
D) Cellulose

21. What is the source of maltose?
A) Milk
B) Cereals
C) Fruits
D) Vegetables

22. What does sucrose produce upon hydrolysis?
A) Glucose and galactose
B) Glucose and fructose
C) Fructose and galactose
D) Glucose only

23. Which carbohydrate cannot be hydrolyzed further?
A) Oligosaccharides
B) Polysaccharides
C) Disaccharides
D) Monosaccharides

24. Which carbohydrate is tasteless?
A) Monosaccharides
B) Polysaccharides
C) Disaccharides
D) Oligosaccharides

25. What is the main use of glucose in the body?
A) Source of energy
B) Fiber for digestion
C) Bacterial nutrition
D) Muscle cramping protection

26. What helps in lowering cholesterol levels in the body?
A) Monosaccharides
B) Disaccharides
C) Fiber
D) Polysaccharides

27. Which substance is found in sugar cane?
A) Sucrose
B) Starch
C) Lactose
D) Glucose

28. Which of the following carbohydrates are used as a drip for medical treatment?
A) Starch
B) Dextrose
C) Sucrose
D) Fructose

29. What concentration of dextrose is in D5W solution?
A) 1%
B) 5%
C) 10%
D) 15%

30. What is the function of dextrose in the body?
A) Provide fat
B) Provide energy
C) Increase protein levels
D) Promote digestion

Answers:

1. A
2. B
3. C
4. C
5. B
6. B
7. C
8. B
9. B
10. C
11. B
12. A
13. B
14. A
15. C
16. B
17. C
18. A
19. B
20. B
21. B
22. B
23. D
24. B
25. A
26. C
27. A
28. B
29. B
30. B