Which of the following statements about the reduction is not true ?

Options

A. `Delta_(f)G^(@) "of the sulphide is greater than those of "CS_(2) ""and"""H_(2)S`
B. `Delta_(f)G^(@)` is megative for roasting of sulphide ore to oxide
C. Roasting of sulphide to oxide is thermodynamically feasible
D. Carbon and hydrogen are suitable reducing agents for metal sulphides

Explanation

(d) both C and `H_(2)` are not suitable for reducing sulphide ore because `Delta_(f)G^(@)` of metal sulphide is more than that of `CS_(2)` and `H_(2)S` which will be formed as a result of reduction.