Question

The vitamin, which is generally may be excreted in urine by humans, is
(A) Vitamin C
(B) Vitamin K
(C) Vitamin A
(D) Vitamin E

Answer 1

Hint: There are two types of vitamins: Fat soluble vitamins and water soluble vitamins. Water soluble vitamins are excreted in urine by humans. Whereas fat soluble vitamins are not excreted in urine.

Complete answer:
Vitamin is the organic molecule which is essential for the proper functioning of the body. These are essential for metabolic activities of the cell. These are essential elements. Because they can’t synthesize in the body. They are taken in the diet. The deficiency of vitamins in the body leads to disease in the body.
There are two kinds of vitamins on the basis of their solubility:
> Fat soluble Vitamins: These are soluble in fats. But they are not soluble in water. Examples of fat soluble vitamins are A, D, E and K.
> Water Soluble Vitamins: These are water soluble in nature. Examples of Water soluble vitamins are Vitamin B complex and Vitamin C.
Water soluble elements are excreted in urine by humans. Because urine consists of water, salts such as sodium, potassium and ammonia etc. The presence of water in urine allows the water soluble vitamins to excrete through the body. But fat soluble vitamins can’t be soluble in water. That’s why they are not excreted in urine.
Vitamin A, K and E are not soluble in urine. Because they are fat soluble. That’s why they are not excreted in urine. Hence, B, C, D are incorrect options.
Vitamin B and C are water soluble vitamins. That’s why they may excrete in urine by humans. Hence, the right answer is “Vitamin A”.

Note:
Fat soluble vitamins do not dissolve in water. They can’t be excreted through urine. Examples of fat soluble vitamins are A, D, E and K. Water soluble vitamins are soluble in water and can be excreted in urine because urine consists of water and other salts. Examples of water soluble vitamins are: Vitamin B and C.