How many of the following vitamins are fat soluble?
Vitamin A, Vitamin B1, Vitamin C, Vitamin D, Vitamin E, Vitamin K, Vitamin B12
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 4
Vitamins are grouped by solubility. Fat soluble vitamins dissolve in fats and oils but not in water: vitamins A, D, E and K. Water soluble vitamins are the B group and vitamin C.
Fat soluble:
Vitamin A
Vitamin D
Vitamin E
Vitamin K
Not fat soluble:
Vitamin B1 — water soluble (B group).
Vitamin C — water soluble.
Vitamin B12 — water soluble (B group); it can be stored in the body, but storage does not make it fat soluble.
Fat soluble vitamins: A, D, E and K = 4.
NCERT (2026-27 edition):
10.4.1 Classification of Vitamins – “(i) Fat soluble vitamins: Vitamins which are soluble in fat and oils but insoluble in water are kept in this group. These are vitamins A, D, E and K. They are stored in liver and adipose (fat storing) tissues.”
“(ii) Water soluble vitamins: B group vitamins and vitamin C are soluble in water so they are grouped together. Water soluble vitamins must be supplied regularly in diet because they are readily excreted in urine and cannot be stored (except vitamin B12) in our body.”