Question

Which one of the following is a water-soluble vitamin that is not excreted easily?

• A. Vitamin B₂
• B. Vitamin B₁
• C. Vitamin B₆
• D. Vitamin B₁₂

Hint:

Vitamin Bsubscript{12} is unique among water-soluble vitamins as it is stored in the body for a long time.

Answer 1

The Correct Option is D

Step 1: Understanding Water-Soluble Vitamins 
Water-soluble vitamins (B-complex and C) dissolve in water and are excreted in urine.
However, Vitamin B₁₂ is an exception. 
Step 2: Storage of Vitamin B₁₂ 
Unlike other B vitamins, B₁₂ is stored in the liver.
It plays a vital role in red blood cell formation and neurological functions.
Final Answer: Vitamin B₁₂ is water-soluble but not excreted easily.