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The Metal ion present in Vitamin B12 is

                General Awareness Question from SSC Tier 1 with Explanation,
      
Also Refer General Reasoning-Part 1
           
    Q. The Metal ion present in Vitamin B12 is:

A)    Nickel
B)    Cobalt
C)    Iron
D)    Zinc

 A: Cobalt (Chemical Symbol Co)
    
       Vitamin B12 is also referred as Cobalamin, as it has the rare element Cobalt positioned in the center of the Corrin ring(Refer to the chemical structure of Vitamin B12).It has a major role in normal functioning of Brain, Nervous system and the formation of Red Blood cells in our body. Mainly present in animal products such as meat, eggs, fish etc.
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