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{:("List - I","List - II "),("(mixed in ...

`{:("List - I","List - II "),("(mixed in equal volumes)","(Nature of solution)"),((A)0.2 "M HCN" + 0.1 M "KOH", (P)"Strong base"),((B) 0.2 "M HCl" + 0.1 "M KCN", (Q)"basic buffer"),((C)0.2 M NH_(3) + 0.1 M HCl, (R)"acidic buffer"),((D) 0.2 M KOH + 0.1 M NH_(4) Cl,(S)" Strong acid"):}`

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The correct Answer is:
A-R;B-S,C-Q;D-P
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{:("Column-I (mixed in equal volumes)" ,, "Column -II (Nature of solution)") , ( "A)" 0.2 M HCN + 0.1 M KOH ,, "P) Strong base"), ("B)" 0.2 M HCl + 0.1 M KCN ,, "Q) basic buffer") , ("C)" 0.2 M NH_(3) + 0.1 M HCl ,, "R) acidic buffer"), ("D)" 0.2 M KOH + 0.1 M NH_(4) Cl ,, "S) Strong acid"):}

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