A) Iron, iodine, carbon, \[Mn,\,Cu,\,{{O}_{2}}\]
B) Iron, iodine,\[Mn,\,\,Cu,\,\,Zn,\]fluorine
C) Iron, iodine, \[Mn,\,\,Zn,\]hydrogen
D) \[N,\,\,{{O}_{2}},\,\,Zn,\]fluorine
Correct Answer: B
Solution :
On the basis of requirement in body the inorganic elements are of two types (i) Macroelement\[C,\,H,\,\,{{N}_{2}},\,\,{{O}_{2}}\]called required in maximum amount. (ii) Microelements iron, iodine \[Mn,\text{ }Cu,\text{ }Zn,\]Fluorine, etc. are required in minimum amount in the body.
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