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WBCS Main Examination 2023 — Paper IV: General Studies II · Question 158 of 200

Q158
General ScienceBiology
The following vitamin is produced in human body due to exposure to sunlight:
  1. a.Vit B$_6$
  2. b.Vit B$_1$
  3. c.Vit C
  4. d.Vit D$_3$

Answer: (D) Vit D$_3$

Ultraviolet-B rays in sunlight convert 7-dehydrocholesterol in the skin into vitamin D$_3$ (cholecalciferol). Vitamins B$_1$, B$_6$ and C must come from food.

Q157 Whole paperQ159