Which does not represent correct method

1.	Which does not represent correct method
Answer» `TiCl_2` + Mg `rarr` Ti + MGCL : KROLL `NI(CO)_4` `rarr` Ni + 4CO : Mond `Ag_(2)CO_(3)` `rarr` 2Ag + `CO_2` + `1/2 O_2` : Van Arkel `ZrI_4` `rarr` Zr + `2I_2` : Van Arkel Answer :(C )

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