General Knowledge · General Studies
विटामिन बी12 में कौन सा धातु आयन मौजूद होता है?
- 1विटामिन C
- 2बेरिलियम
- 3कोबाल्ट✓
- 4एस्कॉर्बिक एसिड
सही उत्तर देखें
कोबाल्ट
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