Which one of the following sulphide ores is concentrated by chemical leaching ?

Options

A. Argentite
B. galena
C. cinnabar
D. zinc blende

Answer

2

Explanation

The following Calculation are
`{:(l_(2)(g),hArr,,2l(g),),(0.074,,,,),(0.074-P,,,2P,):}`
`0.074-P+2P=0.111`
`P=0.037`
`K_(p)=(4P^(2))/(0.074-P)=(4(0.037)^(2))/(0.037)=0.148`