A) Iron, Iodine, Carbon, Manganese, Copper, \[{{O}_{2}}\]
B) Iron, Iodine, Manganese, Copper, Zinc, Fluorine
C) Iron, Iodine, Manganese, Zinc, Hydrogen
D) Nitrogen, Oxygen, Zinc, Fluorine
Correct Answer: B
Solution :
On the basis of their requirement in body the inorganic elements are of two types. (i) Macroelements : C, H, \[{{N}_{2}}\] and \[{{O}_{2}}\] are called big four elements of living body because they are required in maximum amount in the body. Other major elements are calcium, phosphorus, sodium, chlorine, magnesium and sulphure. (ii) Microelements: Iron iodine, manganese, copper, zinc, fluorine etc., are required in minimum amount in the body.
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