1.

Match itemsof Column IwiththeitemsofColumn II andassignthecorrectcode:{:(,"Column I",,,"Column II"), ((A), "Cyanide process",,(i), "Ultrapure Ge"), ((B), "Froth floatation",,(ii), "Dressing of ZnS"), ((C ), "Electrolytic reduction",,(iii), "Extraction of Al"), ((D), "Zonerefining",,(iv),"Extraction of Au"), (,,,(v), "PurificationofNi"):}

Answer»

`{:(A,,B,,C,,D),((i),,(ii),,(iii),,(iv)):} `
`{:(A,,B,,C,,D),((iii),,(iv),,(V),,(i)):} `
`{:(A,,B,,C,,D),((iv),,(ii),,(iii),,(i)):} `
`{:(A,,B,,C,,D),((ii),,(iii),,(i),, (v)):} `

ANSWER :C


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