The coagulation values in millimoles per litre of the electrolytes used for the coagulation of As2S3 are given below

I. (NaCl) =52               II. (BaCl2) =0.69

III. (MgSO4) = 0.22

The correct order of their coagulating power is

(a) I>II>III                 (b) II>I>III

(c) III>II>I                 (d) III>I>II

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