![Which of the following contains a transition metal](https://www.gkseries.com/blog/wp-content/uploads/2021/12/Biomolecules-Multiple-Choice-Questions-and-Answers-215.jpg)
Q. Which of the following contains a transition metal?
- Chlorophyll
- Haemoglobin
- Vitamin B12
- DNA
Answer: Haemoglobin, (c) Vitamin B12
Answer: Haemoglobin, (c) Vitamin B12
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