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Question

Which among the following is a micronutrient?

A
Potassium
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B
Phosphorus
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C
Nitrogen
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D
Cobalt
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Solution

The correct option is D Cobalt
A type of food (e.g. fat, protein, carbohydrate) required in large amounts in the diet is macronutrient and which requires in less amount is micronutrient.
Potassium is one of the most important minerals in the body. It helps regulate fluid balance, muscle contractions and nerve signals. What's more, a high-potassium diet may help reduce blood pressure and water retention, protect against stroke and prevent osteoporosis and kidney stones.
The main function of phosphorus is in the formation of bones and teeth. It plays an important role in how the body uses carbohydrates and fats. It is also needed for the body to make protein for the growth, maintenance, and repair of cells and tissues.
For proper digestion of food and growth, the human body needs nitrogen.
Cobalt is used in the body to help absorb and process vitamin B12.
Hence only cobalt is needed in small amount in the human body so it is a micronutrient.

Hence, the correct option is (D)

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