Y Yogesh 🎓 Tutor III ⭐ 7.43K Points 📊 Chemistry Q. Which one of the following contains cobalt? (A) Chlorophyll (B) Haemoglobin (C) Vitamin C (D) Vitamin B12 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (D) Vitamin B12 You must be Logged in to update hint/solution 💬 Discussion 💬 Comment