Question

what is the white silky preciputate obtained in volumetric analysis of iron​

Answer 1

$\huge\underline\orange{\mathcal Answer}$

A sample of haematite iron ore was handed to eighteen students for analysis, using both zinc and zinc sulphide reduction. The averages of their reports were :—Zinc reduction, 55.3 per cent, iron; and zinc sulphide, 55.4