question_answer

Vitamin \[{{B}_{12}}\] contains:            [AIPMT 2003]

A) Zn (II)

B) Ca (II)

C) Fe (II)

D) Co (III)

Correct Answer: D

Solution :

[d] The molecular formula of vitamin  is  and the chemical name is cyanocobalamine. So, cobalt is present in vitamin .