Question

Which of the following contains cobalt?

• A. Vitamin $B_{12}$
• B. Haemoglobin
• C. Chlorophyll
• D. Vitamin $D$

Answer 1

Answer: (A)

Vitamin $B_{12}$

Answer 2

Vitamin $B_{12}$contains cobalt, while hemoglobin contains iron and chlorophyll contains magnesium.