Some of the mineral elements required in extremely small quantities (traces) are called microelements. Group of such elements are

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zinc, copper, manganese, molybdenum and boron

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copper, zinc, magnesium, iron and sulfur

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molybdenum, boron, zinc, magnesium and calcium

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manganese, zinc, iron, boron and calcium

Q. Some of the mineral elements required in extremely small quantities (traces) are called microelements. Group of such elements are