Question:
Which of the following vitamins is water-soluble?
Which of the following vitamins is water-soluble?
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Remember the solubility properties of vitamins: water-soluble vitamins (like B-complex and C) need to be consumed regularly as they are not stored in significant amounts by the body, while fat-soluble vitamins (like A, D, E, K) can be stored and may accumulate to toxic levels if overconsumed.
Updated On: May 31, 2026
- Vitamin C
- Vitamin A
- Vitamin D
- Vitamin K
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The Correct Option is A
Solution and Explanation
Step 1: Concept
Vitamins can be classified into two main categories based on their solubility: water-soluble vitamins and fat-soluble vitamins. Water-soluble vitamins dissolve in water, are not stored in the body to a significant extent, and excess amounts are generally excreted through urine. Fat-soluble vitamins, on the other hand, dissolve in fats and oils, can be stored in the liver and fatty tissues, and require dietary fat for absorption.
Step 2: Meaning
The question asks us to identify which of the given options is a water-soluble vitamin among Vitamin C, Vitamin A, Vitamin D, and Vitamin K.
Step 3: Analysis
Vitamin C (ascorbic acid) is known as a water-soluble vitamin. It plays crucial roles in collagen synthesis, immune function, and antioxidant activities. Vitamin A is a fat-soluble vitamin that is essential for vision, immune function, and cellular communication. Vitamin D is also fat-soluble and important for calcium absorption and bone health. Vitamin K has two forms: Vitamin K1 (phylloquinone) and Vitamin K2 (menaquinones), both of which are fat-soluble. They play key roles in blood clotting and bone metabolism. Since the correct answer is given as A, we can conclude that among these options, only Vitamin C is water-soluble.
Step 4: Conclusion
Vitamin C is a water-soluble vitamin, whereas Vitamin A, Vitamin D, and Vitamin K are fat-soluble vitamins. Final Answer: (A)
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