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{:(Column-I("Metal"),column-II),((A)"Mag...

`{:(Column-I("Metal"),column-II),((A)"Magnesite",(p)"Ore of magnesium"),((B)"Siderite",(q)"Ore of aluminium"),((C)"Corundum",(r)"Oxide ore"),((D)"Bauxite",(s)"Carbonate ore"):}`

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The correct Answer is:
`(A) rarr p,s; (B) rarr s; (C) rarr q,r; (D) rarr q,r`
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