Which of the following is a fat soluble vitamin?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Vitamin K
Vitamins are grouped by their solubility in water or fat. Of the four options, only vitamin K, needed for the clotting of blood, is fat soluble; the other three are water soluble.
Why the other options are incorrect
Option (1) Thiamine — Incorrect. This is vitamin B1, a water soluble vitamin; its deficiency causes beri beri.
Option (2) Riboflavin — Incorrect. This is vitamin B2, also water soluble; its deficiency causes cheilosis (cracked lips and corners of the mouth).
Option (3) Ascorbic acid — Incorrect. This is vitamin C, water soluble; its deficiency causes scurvy (bleeding gums).
NCERT (2026-27 edition):
Classification of Vitamins – …
