The metal ion present in vitamin $B_{12}$ is
- A$Co^{3+}$
- B$Co^{2+}$
- C$Fe^{2+}$
- D$Fe^{3+}$
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Similar Questions
Which of the following vitamins is not soluble in water?
Easy
View SolutionWhy are vitamin $A$ and vitamin $C$ essential to us? Give their important sources.
Medium
View SolutionMatch List-$I$ with List-$II$:
List-$I$ (Name of the Vitamin) List-$II$ (Deficiency disease) $A$. Vitamin $B_{12}$ $I$. Cheilosis $B$. Vitamin $D$ $II$. Convulsions $C$. Vitamin $B_2$ $III$. Rickets $D$. Vitamin $B_6$ $IV$. Pernicious anaemia
Choose the correct answer from the options given below:
| List-$I$ (Name of the Vitamin) | List-$II$ (Deficiency disease) |
| $A$. Vitamin $B_{12}$ | $I$. Cheilosis |
| $B$. Vitamin $D$ | $II$. Convulsions |
| $C$. Vitamin $B_2$ | $III$. Rickets |
| $D$. Vitamin $B_6$ | $IV$. Pernicious anaemia |
Choose the correct answer from the options given below:
Match List – $I$ with List – $II$
List – $I$ (Vitamins) List – $II$ (Deficiency Diseases) $(a)$ $B_1$ $(i)$ Convulsions $(b)$ $B_2$ (ii) $RBC$ deficiency in Haemoglobin $(c)$ $B_6$ (iii) Retarded growth $(d)$ $B_{12}$ (iv) Burning sensation of the skin
Choose the correct answer from the options given below.
| List – $I$ (Vitamins) | List – $II$ (Deficiency Diseases) |
| $(a)$ $B_1$ | $(i)$ Convulsions |
| $(b)$ $B_2$ | (ii) $RBC$ deficiency in Haemoglobin |
| $(c)$ $B_6$ | (iii) Retarded growth |
| $(d)$ $B_{12}$ | (iv) Burning sensation of the skin |
Choose the correct answer from the options given below.
MediumKCET 2026
View SolutionAll structures given below are of vitamin $C$. The most stable of them is:
DifficultJEE MAIN 2023
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