30 multiple-choice questions (MCQs) along with their answers on vitamins:


1. Which vitamin is essential for maintaining healthy vision?
   a) Vitamin A
   b) Vitamin B12
   c) Vitamin C
   d) Vitamin D
   **Answer: a) Vitamin A**

2. What is the primary function of Vitamin C in the body?
   a) Bone health
   b) Blood clotting
   c) Wound healing
   d) Nerve function
   **Answer: c) Wound healing**

3. Which vitamin is crucial for calcium absorption?
   a) Vitamin A
   b) Vitamin B6
   c) Vitamin D
   d) Vitamin K
   **Answer: c) Vitamin D**

4. Deficiency of which vitamin causes scurvy?
   a) Vitamin A
   b) Vitamin C
   c) Vitamin E
   d) Vitamin K
   **Answer: b) Vitamin C**

5. Which vitamin is commonly known as the "sunshine vitamin"?
   a) Vitamin A
   b) Vitamin C
   c) Vitamin D
   d) Vitamin E
   **Answer: c) Vitamin D**

6. Vitamin K is essential for:
   a) Blood clotting
   b) Healthy skin
   c) Energy production
   d) Vision
   **Answer: a) Blood clotting**

7. Which vitamin is important for the formation of red blood cells?
   a) Vitamin B12
   b) Vitamin C
   c) Vitamin D
   d) Vitamin K
   **Answer: a) Vitamin B12**

8. Which vitamin is an antioxidant that helps protect cells from damage?
   a) Vitamin A
   b) Vitamin C
   c) Vitamin E
   d) Vitamin K
   **Answer: c) Vitamin E**

9. What is the primary function of Vitamin B1 (Thiamine)?
   a) Healthy skin
   b) Energy metabolism
   c) Blood clotting
   d) Vision
   **Answer: b) Energy metabolism**

10. Which vitamin is essential for proper functioning of the nervous system?
    a) Vitamin B1
    b) Vitamin B6
    c) Vitamin B12
    d) Vitamin D
    **Answer: b) Vitamin B6**

11. Vitamin B9 is also known as:
    a) Riboflavin
    b) Folic acid
    c) Niacin
    d) Pyridoxine
    **Answer: b) Folic acid**

12. Which vitamin is important for the synthesis of collagen?
    a) Vitamin A
    b) Vitamin C
    c) Vitamin E
    d) Vitamin K
    **Answer: b) Vitamin C**

13. Which vitamin is found abundantly in citrus fruits?
    a) Vitamin A
    b) Vitamin B12
    c) Vitamin C
    d) Vitamin D
    **Answer: c) Vitamin C**

14. Which vitamin is crucial for maintaining healthy bones and teeth?
    a) Vitamin A
    b) Vitamin D
    c) Vitamin K
    d) Vitamin E
    **Answer: b) Vitamin D**

15. Which vitamin is essential for blood coagulation?
    a) Vitamin A
    b) Vitamin B6
    c) Vitamin K
    d) Vitamin E
    **Answer: c) Vitamin K**

16. What is the primary function of Vitamin E?
    a) Bone health
    b) Antioxidant
    c) Wound healing
    d) Blood clotting
    **Answer: b) Antioxidant**

17. Which vitamin is crucial for proper absorption of iron?
    a) Vitamin A
    b) Vitamin C
    c) Vitamin D
    d) Vitamin K
    **Answer: b) Vitamin C**

18. Vitamin B2 is also known as:
    a) Thiamine
    b) Riboflavin
    c) Niacin
    d) Folic acid
    **Answer: b) Riboflavin**

19. Which vitamin is important for the production of collagen and connective tissues?
    a) Vitamin A
    b) Vitamin C
    c) Vitamin E
    d) Vitamin K
    **Answer: b) Vitamin C**

20. Which vitamin is crucial for the absorption of calcium and phosphorus?
    a) Vitamin A
    b) Vitamin D
    c) Vitamin E
    d) Vitamin K
    **Answer: b) Vitamin D**

21. Deficiency of which vitamin can lead to night blindness?
    a) Vitamin A
    b) Vitamin B6
    c) Vitamin C
    d) Vitamin D
    **Answer: a) Vitamin A**

22. Vitamin B3 is also known as:
    a) Thiamine
    b) Riboflavin
    c) Niacin
    d) Folic acid
    **Answer: c) Niacin**

23. Which vitamin is crucial for the synthesis of blood clotting factors?
    a) Vitamin A
    b) Vitamin C
    c) Vitamin K
    d) Vitamin E
    **Answer: c) Vitamin K**

24. Which vitamin is important for the maintenance of healthy skin?
    a) Vitamin A
    b) Vitamin C
    c) Vitamin E
    d) Vitamin K
    **Answer: a) Vitamin A**

25. Which vitamin is essential for the metabolism of carbohydrates, fats, and proteins?
    a) Vitamin B1
    b) Vitamin B2
    c) Vitamin B3
    d) Vitamin B5
    **Answer: a) Vitamin B1**

26. Which vitamin is important for the formation of DNA and genetic material?
    a) Vitamin B6
    b) Vitamin B9
    c) Vitamin B12
    d) Vitamin D
    **Answer: b) Vitamin B9**

27. Which vitamin is crucial for proper functioning of the immune system?
    a) Vitamin A
    b) Vitamin C
    c) Vitamin D
    d) Vitamin E
    **Answer: b) Vitamin C**

28. Vitamin B12 is primarily found in:
    a) Fruits
    b) Vegetables
    c) Dairy products
    d) Grains
    **Answer: c) Dairy products**

29. Which vitamin is essential for the conversion of food into energy?
    a) Vitamin B1
    b) Vitamin B2
    c) Vitamin B3
    d) Vitamin B6
    **Answer: d) Vitamin B6**

30. Vitamin B5 is also known as:
    a) Thiamine
    b) Riboflavin
    c) Niacin
    d) Pantothenic acid
    **Answer: d) Pantothenic acid**

31. Which vitamin is important for the development of red blood cells?
    a) Vitamin B12
    b) Vitamin C
    c) Vitamin D
    d) Vitamin E
    **Answer: a) Vitamin B12**