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State PCS PYQPrelims 2025

UPPCS · Question 10

Consider the following elements found in a typical 70 kg man and arrange them in correct increasing order. 1. Sodium 2. Potassium 3. Copper 4. Iron Select the correct answer using the code given below.

  1. 3, 4, 2, 1
  2. 4, 3, 2, 1
  3. 4, 3, 1, 2
  4. 3, 4, 1, 2
Show answer & explanation

Answer: (D) 3, 4, 1, 2

Explanation

A 70 kg adult has roughly 72 mg copper, about 4 g iron, about 100 g sodium and about 140 g potassium, so the increasing order is Cu < Fe < Na < K.