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Which of the following contains cobalt?

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Which of the following contains cobalt?

(a) Vitamin B12

(b) Haemoglobin

(c) Chlorophyll

(d) Vitamin D

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1 Answer

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The correct option is: (a) Vitamin B12

Explanation:

Vitamin B12 contains cobalt, while haemoglobin contains iron and Chlorophyll contains magnesium.

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