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Railways PYQCBT 1 2016

RRB NTPC · Question 12

Which vitamin among the following is crucial for blood clotting?

  1. Vitamin D

  2. Vitamin K

  3. Vitamin A

  4. Vitamin E

Show answer & explanation

Answer: (B) Vitamin K

Explanation

Vitamin K is essential for blood clotting: the liver needs it to make several clotting factors (such as prothrombin). A deficiency causes excessive bleeding. Vitamin D is for calcium absorption and bones, Vitamin A for vision, and Vitamin E is an antioxidant.