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Metals and Their Compounds

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  1. Consider the following elements
    1. cobalt
    2. phosphorous
    3. Zinc
    Which of the above elements are required for the maintaining healthy human body ?
    1. 1 and 2
    2. 2 and 3
    3. 1 and 3
    4. 1, 2 and 3
Correct Option: D

NA


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