📊 Biology
Q. Which mineral is required for hemoglobin formation?
  • (A) Calcium
  • (B) Iron
  • (C) Potassium
  • (D) Sodium
✅ Correct Answer: (B) Iron

Explanation: Iron is essential for hemoglobin synthesis.

Explanation by: Mr. Dubey
Iron is essential for hemoglobin synthesis.

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