NCERT objective type questions — task. Science CBSE, Class 10.

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1. Which statement is not true about thyroxin?

It regulates carbohydrates, protein and fat metabolism in the body
Iron is essential for the synthesis of thyroxin
Thyroxin is also called thyroid hormone
Thyroid gland requires iodine to synthesise thyroxin

2. Identify the following is responsible for maintaining biological clock of body

Pineal
Kidney
Thyroid
Adrenal

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