The IODINE-containing hormone is:
AInsulin
BThyroxine
CAdrenaline
DTestosterone
Answer & Solution
Correct answer: B. Thyroxine
1. THYROXINE (T₄) contains 4 iodine atoms; T₃ contains 3.
2. Iodine deficiency → goitre and hypothyroidism.
3. India: iodised salt is mandated to prevent endemic goitre.
_Source: NCERT Class 10 Science Ch 6 §6.2 Thyroxine_
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