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SSC CHSL 2021 PYQ — Question 31

SSC CHSL - 15 April 2021 - Shift 1 • General Awareness • Q31

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Which of the following is a trace mineral found in the human body?

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Correct answer: D

Explanation

The correct answer is option 4 i.e. Selenium.

Selenium, a trace mineral required by the human body in small amounts for antioxidant functions, thyroid metabolism, and immune support.

Other Options:

  1. Sulfur – A macromineral (needed in larger amounts) important for protein structure (e.g., cysteine, methionine) and enzyme function.

  2. Phosphorus – A macromineral vital for bone health, energy production (ATP), and DNA synthesis.

  3. Magnesium – Another macromineral crucial for muscle function, nerve signaling, and over 300 enzymatic reactions.

Trace minerals (like selenium, iron, zinc) are required in smaller quantities (<100 mg/day) compared to macrominerals (calcium, phosphorus, magnesium), which are needed in larger amounts (>100 mg/day). Selenium stands out as the only trace mineral in the given options.