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Chemistry
Which of the following contains cobalt?
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Q. Which of the following contains cobalt?
AIIMS
AIIMS 1996
Biomolecules
A
Vitamin $B_{12}$
61%
B
Haemoglobin
9%
C
Chlorophyll
15%
D
Vitamin $D$
16%
Solution:
Vitamin $B_{12}$contains cobalt, while hemoglobin contains iron and chlorophyll contains magnesium.