The metal present in $Vitamin \ B_{12}$ is
- AMagnesium
- BIron
- CCobalt
- DManganese
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Copper $(II)$ ions give a reddish brown precipitate with potassium ferrocyanide. The formula of the precipitate is
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View SolutionAssign the correct code for Column-$I$ and Column-$II$:
Column-$I$ (Coordination compound) Column-$II$ (Central metal atom) $(a)$ Chlorophyll $(p)$ Rhodium $(b)$ Blood pigment $(q)$ Cobalt $(c)$ Wilkinson catalyst $(r)$ Calcium $(d)$ Vitamin $B_{12}$ $(s)$ Iron $(t)$ Magnesium
| Column-$I$ (Coordination compound) | Column-$II$ (Central metal atom) |
|---|---|
| $(a)$ Chlorophyll | $(p)$ Rhodium |
| $(b)$ Blood pigment | $(q)$ Cobalt |
| $(c)$ Wilkinson catalyst | $(r)$ Calcium |
| $(d)$ Vitamin $B_{12}$ | $(s)$ Iron |
| $(t)$ Magnesium |
Medium
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