Vitamins Important questions

Here are 100 important questions and answers on Vitamins for competitive exams:

1. What are vitamins?
   Answer: Vitamins are essential organic compounds that are required in small quantities for normal growth, metabolism, and maintenance of the human body.
2. What is the difference between fat-soluble and water-soluble vitamins?
   Answer: Fat-soluble vitamins dissolve in fat and are stored in the body’s fatty tissues, while water-soluble vitamins dissolve in water and are not stored in the body.
3. Name the four fat-soluble vitamins.
   Answer: Vitamin A, D, E, and K.
4. Name the nine water-soluble vitamins.
   Answer: Vitamin B1 (thiamine), Vitamin B2 (riboflavin), Vitamin B3 (niacin), Vitamin B5 (pantothenic acid), Vitamin B6 (pyridoxine), Vitamin B7 (biotin), Vitamin B9 (folic acid), Vitamin B12 (cobalamin), and Vitamin C (ascorbic acid).
5. Which vitamin is commonly known as the “sunshine vitamin”?
   Answer: Vitamin D.
6. Which vitamin is responsible for proper blood clotting?
   Answer: Vitamin K.
7. Which vitamin is essential for the formation of collagen, a protein that gives structure to skin, bones, and muscles?
   Answer: Vitamin C.
8. Which vitamin is important for proper nerve function?
   Answer: Vitamin B12.
9. Which vitamin is essential for the growth and development of red blood cells?
   Answer: Vitamin B9 (folic acid).
10. Which vitamin is important for the metabolism of carbohydrates, proteins, and fats?
    Answer: Vitamin B1 (thiamine).
11. Which vitamin is important for the production of energy in the body?
    Answer: Vitamin B2 (riboflavin).
12. Which vitamin is important for healthy skin and eyes?
    Answer: Vitamin A.
13. Which vitamin is important for healthy bones and teeth?
    Answer: Vitamin D.
14. Which vitamin is important for the proper functioning of the immune system?
    Answer: Vitamin E.
15. Which vitamin is important for the proper functioning of the nervous system?
    Answer: Vitamin B6 (pyridoxine).
16. Which vitamin is important for healthy hair and nails?
    Answer: Biotin (Vitamin B7).
17. Which vitamin is important for healthy skin and wound healing?
    Answer: Vitamin E.
18. Which vitamin is important for the metabolism of fatty acids and amino acids?
    Answer: Vitamin B5 (pantothenic acid).
19. Which vitamin is important for the proper functioning of the digestive system?
    Answer: Niacin (Vitamin B3).
20. Which vitamin is important for the maintenance of healthy eyesight?
    Answer: Vitamin A.
21. What are the sources of Vitamin A?
    Answer: Animal sources like liver, fish oil, egg yolk, and dairy products, as well as plant sources like carrots, sweet potatoes, and spinach.
22. What are the sources of Vitamin D?
    Answer: Sunlight, fatty fish like salmon and tuna, egg yolks, and fortified foods like milk and cereal.
23. What are the sources of Vitamin E?
    Answer: Nuts and seeds, vegetable oils, leafy green vegetables, and fortified foods.
24. What are the sources of Vitamin K?
    Answer: Leafy green vegetables like kale and spinach, as well as liver, egg yolks, and some fruits.
25. What are the sources of Vitamin B1 (thiamine)?
    Answer: Whole grains, pork, fish, and legumes.
26. What are the sources of Vitamin B2 (riboflavin)?
    Answer: Dairy products, meat, and leafy
27. What is the difference between fat-soluble and water-soluble vitamins?
    Answer: Fat-soluble vitamins dissolve in fat and are stored in the body’s fatty tissues, while water-soluble vitamins dissolve in water and are excreted in urine if the body doesn’t use them.
28. Which vitamin is commonly known as the “sunshine vitamin”?
    Answer: Vitamin D is commonly known as the “sunshine vitamin” because the body produces it in response to sunlight.
29. What is the main function of vitamin A?
    Answer: Vitamin A is important for vision, immune function, and the health of the skin and mucous membranes.
30. What is the main function of vitamin C?
    Answer: Vitamin C is important for immune function, collagen production, and antioxidant protection.
31. What is the main function of vitamin K?
    Answer: Vitamin K is important for blood clotting and bone health.
32. What is the main function of vitamin E?
    Answer: Vitamin E is important for antioxidant protection and the health of the skin and eyes.
33. What is the main function of thiamin (vitamin B1)?
    Answer: Thiamin is important for energy metabolism and the health of the nervous system.
34. What is the main function of riboflavin (vitamin B2)?
    Answer: Riboflavin is important for energy metabolism and the health of the skin, eyes, and nervous system.
35. What is the main function of niacin (vitamin B3)?
    Answer: Niacin is important for energy metabolism and the health of the skin, digestive system, and nervous system.
36. What is the main function of vitamin B6?
    Answer: Vitamin B6 is important for protein metabolism, immune function, and the health of the nervous system.
37. What is the main function of folic acid (vitamin B9)?
    Answer: Folic acid is important for cell growth and division, DNA synthesis, and the health of the nervous system.
38. What is the main function of vitamin B12?
    Answer: Vitamin B12 is important for red blood cell production, DNA synthesis, and the health of the nervous system.
39. What is the main function of biotin (vitamin B7)?
    Answer: Biotin is important for energy metabolism and the health of the skin, hair, and nails.
40. What is the main function of pantothenic acid (vitamin B5)?
    Answer: Pantothenic acid is important for energy metabolism and the health of the skin, hair, and nails.
41. What is the main function of vitamin E?
    Answer: Vitamin E is important for antioxidant protection and the health of the skin and eyes.
42. Which vitamin is essential for the absorption of calcium?
    Answer: Vitamin D is essential for the absorption of calcium.
43. Which vitamin is important for the formation of collagen?
    Answer: Vitamin C is important for the formation of collagen.
44. Which vitamin is important for the health of the eyes?
    Answer: Vitamin A is important for the health of the eyes.
45. Which vitamin is important for the health of the nervous system?
    Answer: Several B vitamins, including thiamin, riboflavin, niacin, B6, B9, and B12, are important for the health of the nervous system.
46. Which vitamin deficiency can cause scurvy?
    Answer: Vitamin C deficiency can cause scurvy.
47. What are the food sources of Vitamin C?
    Answer: Citrus fruits like oranges and lemons, strawberries, kiwi, papaya, guava, bell peppers, broccoli, and spinach.
48. What is the main function of Vitamin D?
    Answer: Vitamin D helps the body absorb calcium, which is important for building and maintaining strong bones.
49. What are the food sources of Vitamin E?
    Answer: Nuts and seeds, green leafy vegetables, vegetable oils, and fortified cereals.
50. What are the symptoms of Vitamin B12 deficiency?
    Answer: Fatigue, weakness, constipation, loss of appetite, weight loss, and nerve problems like tingling or numbness in the hands and feet.
51. What is the recommended daily intake of Vitamin K?
    Answer: For adults, the recommended daily intake of Vitamin K is 90 micrograms for women and 120 micrograms for men.
52. Which vitamin is known as the “sunshine vitamin”?
    Answer: Vitamin D is known as the “sunshine vitamin” because the body can produce it when the skin is exposed to sunlight.
53. What are the food sources of Vitamin B6?
    Answer: Chicken, fish, bananas, potatoes, and fortified cereals.
54. What is the main function of Vitamin A?
    Answer: Vitamin A is important for vision, immune system function, and healthy skin.
55. Which vitamin is important for the synthesis of collagen?
    Answer: Vitamin C is important for the synthesis of collagen, which is a protein that helps keep skin, bones, and joints healthy.
56. What are the symptoms of Vitamin D deficiency?
    Answer: Bone pain, muscle weakness, fatigue, and increased susceptibility to infections.
57. What is the main function of Vitamin B2?
    Answer: Vitamin B2, also known as riboflavin, is important for energy production, healthy skin, and vision.
58. What are the food sources of Vitamin B3?
    Answer: Meat, fish, peanuts, mushrooms, and fortified cereals.
59. What is the recommended daily intake of Vitamin E?
    Answer: For adults, the recommended daily intake of Vitamin E is 15 milligrams.
60. Which vitamin is important for blood clotting?
    Answer: Vitamin K is important for blood clotting.
61. What are the symptoms of Vitamin C deficiency?
    Answer: Fatigue, muscle weakness, joint and muscle aches, and slow wound healing.
62. What are the food sources of Vitamin K?
    Answer: Green leafy vegetables like spinach, kale, and broccoli, as well as vegetable oils and fortified cereals.
63. What is the main function of Vitamin B5?
    Answer: Vitamin B5, also known as pantothenic acid, is important for energy production and the production of hormones and cholesterol.
64. What are the symptoms of Vitamin B2 deficiency?
    Answer: Cracked lips, inflamed tongue, and skin rashes.
65. What is the main function of Vitamin B6?
    Answer: Vitamin B6 is important for protein metabolism and the production of neurotransmitters.
66. What are the food sources of Vitamin B12?
    Answer: Animal products like meat, fish, and dairy products, as well as fortified cereals and soy products for vegetarians and vegans.
67. What is the recommended daily intake of Vitamin D?
    Answer: The recommended daily intake of Vitamin D varies depending on age and other factors, but for adults it is usually between 600 and 800 IU.
68. Which vitamin is important for calcium absorption?
    Answer: Vitamin D is important for calcium absorption.
69. What are the symptoms of Vitamin B6 deficiency?
    Answer: Numbness or tingling in the hands and feet, muscle weakness, and anemia.
70. What are the food sources of Vitamin A?
    Answer: Animal products like liver, fish, and eggs, as well as orange and yellow fruits and vegetables like carrots, sweet potatoes, and cantaloupe.
71. What is the main function of Vitamin B9?
    Answer: Vitamin B9, also known as folic acid or folate, is important for DNA synthesis and cell growth.
72. What are the symptoms of Vitamin B3 deficiency?
    Answer: Pellagra, which includes symptoms like diarrhea, dermatitis, and dementia.
73. Which vitamin is important for vision?
    Answer: Vitamin A is important for vision.
74. What are the food sources of Vitamin B1?
    Answer: Whole grains, nuts, meat, and fish.
75. What is the main function of Vitamin B12?
    Answer: Vitamin B12 is important for the production of red blood cells and for the functioning of the nervous system.
76. What are the symptoms of Vitamin D deficiency?
    Answer: Weakness, bone pain, and an increased risk of fractures.
77. Which vitamin is important for the immune system?
    Answer: Vitamin C is important for the immune system.
78. What are the food sources of Vitamin C?
    Answer: Citrus fruits like oranges and grapefruits, as well as kiwi, strawberries, and broccoli.
79. What is the main function of Vitamin E?
    Answer: Vitamin E is an antioxidant that helps protect cells from damage.
80. What are the symptoms of Vitamin K deficiency?
    Answer: Excessive bleeding or bruising, and an increased risk of bone fractures.
81. Which vitamin is important for healthy skin?
    Answer: Vitamin E is important for healthy skin.
82. What are the food sources of Vitamin K?
    Answer: Leafy green vegetables like spinach and kale, as well as broccoli and Brussels sprouts.
83. What is the main function of Vitamin B2?
    Answer: Vitamin B2, also known as riboflavin, is important for energy production and for maintaining healthy skin and eyes.
84. What are the symptoms of Vitamin B12 deficiency?
    Answer: Fatigue, weakness, and tingling or numbness in the hands and feet.
85. Which vitamin is important for the absorption of iron?
    Answer: Vitamin C is important for the absorption of iron.
86. What are the food sources of Vitamin B7?
    Answer: Eggs, nuts, and some vegetables like sweet potatoes and broccoli.
87. What is the main function of Vitamin D?
    Answer: Vitamin D helps the body absorb calcium and phosphorus, which are important for strong bones and teeth.
88. What are the food sources of Vitamin D?
    Answer: Fatty fish, such as salmon and tuna, and fortified foods like milk and cereal.
89. What is the main function of Vitamin A?
    Answer: Vitamin A is important for vision, immune function, and skin health.
90. What are the symptoms of Vitamin A deficiency?
    Answer: Night blindness, dry skin, and an increased susceptibility to infections.
91. Which vitamin is important for blood clotting?
    Answer: Vitamin K is important for blood clotting.
92. What are the food sources of Vitamin A?
    Answer: Carrots, sweet potatoes, and leafy green vegetables.
93. What is the main function of Vitamin B6?
    Answer: Vitamin B6, also known as pyridoxine, is important for brain development and the production of neurotransmitters.
94. What are the symptoms of Vitamin B6 deficiency?
    Answer: Anemia, skin rashes, and depression.
95. Which vitamin is important for healthy hair?
    Answer: Biotin, also known as Vitamin B7, is important for healthy hair.
96. What are the food sources of Vitamin B12?
    Answer: Animal products like meat, fish, and dairy.
97. What is the main function of Vitamin E?
    Answer: Vitamin E is an antioxidant that helps protect the body’s cells from damage caused by free radicals.
98. What are the food sources of Vitamin E?
    Answer: Nuts and seeds, such as almonds and sunflower seeds, and vegetable oils, such as olive oil and canola oil.
99. What is the main function of Vitamin C?
    Answer: Vitamin C is important for immune function, wound healing, and the production of collagen.
100. What are the symptoms of Vitamin C deficiency?
     Answer: Scurvy, a disease characterized by weakness, anemia, and skin rashes.
101. Which vitamin is important for eye health?
     Answer: Vitamin C is important for eye health.
102. What is the main function of Vitamin B1?
     Answer: Vitamin B1, also known as thiamine, is important for converting food into energy.
103. What are the food sources of Vitamin C?
     Answer: Citrus fruits, such as oranges and grapefruits, and vegetables, such as broccoli and red bell peppers.
104. What are the symptoms of Vitamin B1 deficiency?
     Answer: Beriberi, a disease characterized by weakness, muscle wasting, and nerve damage.
105. Which vitamin is important for brain function?
     Answer: Vitamin B12 is important for brain function.
106. What are the food sources of Vitamin B1?
     Answer: Whole grains, such as brown rice and whole wheat bread, and legumes, such as lentils and beans.
107. What is the main function of Vitamin A?
     Answer: Vitamin A is important for vision, immune function, and cell growth and differentiation.
108. What are the food sources of Vitamin A?
     Answer: Animal sources, such as liver and dairy products, and plant sources, such as sweet potatoes and carrots.
109. What is the main function of Vitamin D?
     Answer: Vitamin D helps the body absorb calcium and phosphorus, which are important for bone health.
110. What are the food sources of Vitamin D?
     Answer: Fatty fish, such as salmon and tuna, and fortified foods, such as milk and cereal.
111. What are the symptoms of Vitamin D deficiency?
     Answer: Rickets in children, and osteomalacia and osteoporosis in adults.
112. Which vitamin is important for blood clotting?
     Answer: Vitamin K is important for blood clotting.
113. What are the food sources of Vitamin K?
     Answer: Green leafy vegetables, such as spinach and kale, and vegetable oils.
114. Which vitamin is important for skin health?
     Answer: Vitamin E is important for skin health.
115. What are the symptoms of Vitamin E deficiency?
     Answer: Rare, but can include nerve and muscle damage.
116. What is the main function of Vitamin B6?
     Answer: Vitamin B6 is important for protein and carbohydrate metabolism, and nervous system function.
117. Which vitamin is important for collagen synthesis?
     Answer: Vitamin C is important for collagen synthesis.
118. What are the food sources of Vitamin C?
     Answer: Citrus fruits, strawberries, kiwi, peppers, broccoli, and tomatoes.
119. What are the symptoms of Vitamin C deficiency?
     Answer: Scurvy, which can cause weakness, joint pain, and bleeding gums.
120. What is the main function of Vitamin B12?
     Answer: Vitamin B12 is important for nervous system function, DNA synthesis, and red blood cell production.
121. What are the food sources of Vitamin B12?
     Answer: Animal sources, such as meat, fish, and dairy products.
122. What are the symptoms of Vitamin B12 deficiency?
     Answer: Fatigue, weakness, numbness or tingling in the hands and feet, and memory problems.
123. Which vitamin is important for energy production?
     Answer: B vitamins, including thiamin, riboflavin, niacin, pantothenic acid, and biotin, are important for energy production.
124. What are the food sources of B vitamins?
     Answer: Whole grains, meat, fish, dairy products, and leafy green vegetables.
125. What is the main function of Vitamin K?
     Answer: Vitamin K is important for blood clotting and bone health.
126. What are the symptoms of Vitamin K deficiency?
     Answer: Increased risk of bleeding and easy bruising.

I hope these sample questions and answers on Vitamins are helpful for your competitive exam preparations. All the best!

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