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Railways PYQCBT 1 2016

RRB NTPC · Question 29

How much salt is present in our body?

  1. 1%

  2. 2%

  3. 0.4%

  4. 0.6%

Show answer & explanation

Answer: (C) 0.4%

Explanation

An adult human body contains about 0.4% salt (sodium chloride) by weight, roughly 250 g in a 70 kg person. The sodium and chloride ions help maintain fluid balance, nerve signals and muscle function.