Question

Given below are two statements :

Statement I : Sphalerite is a sulphide ore of zinc and copper glance is a sulphide ore of copper .

Statement II : It is possible to separate two sulphide ores by adjusting proportion of oil to water or by using depressants in a froth flotation method .

Choose the most appropriate answer from the options given below :

• A. Statement I is true but Statement II is false
• B. Statement I is false but Statement II is true
• C. Both Statement I and Statement II are false
• D. Both Statement I and Statement II are true

Answer 1

The correct option is D Both Statement I and Statement II are true

$\text{Sphalerite}-ZnS$

$\text{Copper glance}-C{u}_{2}S$

Yes it is possible to separate two sulphide ores by adjusting proportion of oil to water or by using depressants in froth flotation process.

Eg : $ZnS$and $PbS$ can separated by using $NaCN$.

$ZnS+4NaCN\to N{a}_2\left[Zn{\left(CN\right)}_4\right]+N{a}_{2}S$