HomeEveryday Science MCQsThe metal, which is a constituent of vitamin B12 is____________? 1694. The metal, which is a constituent of vitamin B12 is____________?By Admin / September 17, 2025 A. Iron B. Magnesium C. Zinc D. Cobalt ✅ The correct answer is option D.
1. Which of the following does not pollute the air? Leave a Comment / Everyday Science MCQs / By Admin
2. Which of the following planets have the longest day? Leave a Comment / Everyday Science MCQs / By Admin