Which of the following statement are correct ?
(i) Smaller the gold number of lyophilic colloid, larger will be its protective power
(ii) Lyophilic sols , in contrast to lyophobic sols are easily coagulated on addition of small amounts of electrolytes.
(iii) Ferric chloride solution is used to stop bleeding from a fresh cut because it coagulating the blood
(iv) The flocculatin value of arsenious sulphide sol is independent of the anion of the coagulating
A. (i),(ii) and (iii)
B. (i) , (iii) and (iv)
C. (ii) , (iii) and (iv)
D. (i),(ii) and (iv)
