Bordeaux mixture is a mixture of copper sulphate and

Options

A. Pyridine
B. Rochelle salt
C. Lime
D. Sodium oxide

Answer

C

Explanation

Cupric sulphate is used in large amounts as a germicide, fungicide and timer preservative. Its solution with slaked lime, known as Bordeaux mixture `[CuSO_(4) + Ca(OH)_(2)]`, is used as a spray for proventing blight in potatose and vines. Copper (II) sulphate is also used for copper plating (electroplating), electrotyping ans as the starting point in the preparation of many compounds of copper. Copper (II) sulphate form well-defined crystalline double salts with sulphates of strongly electropositive metals which generally correspond to the type `M_(2)` `^(I)SO_(4)` . `CuSO_(4)` . `6H_(2)O` and are greenish blue in color, e.g., `(NH_(4))_(2) SO_(4)` . `CuSO_(4)` . `6H_(2)O`.