Copper Matte is extracted from copper pyrites ore by heating it in blast furnace. The method is based on the principle that:

Options

A. copper has more affinity for oxygen than sulphur at high temperature
B. iron has less affinity for oxygen than sulphur at high temperature
C. sulphur has less affinity for oxygen at high temperature
D. copper has less affinity for oxygen than sulphur at high temperature

Answer

D

Explanation

`2CuFeS_(2) +O_(2) rarr Cu_(2)S +2FeS +SO_(2)`
`FeS +(3)/(2)O_(2) rarr FeO +SO_(2)uarr`
`FeO +SiO_(2)rarr FeSiO_(3)`
(Remain `Cu_(2)S` is called mette)