NDA General Ability Question (2025) — Solution

Step-by-step solution

Iodine is an essential trace element required by the thyroid gland to synthesize thyroid hormones, primarily thyroxin (T4) and triiodothyronine (T3). Deficiency of iodine in the diet leads to decreased production of thyroxin, which can cause conditions like goiter and hypothyroidism. Therefore, iodized salt is a vital part of our diet as it provides the necessary iodine for the synthesis of thyroxin. Answer: Thyroxin