MCQ
Which of the method used for the concentration of sulfide ores?
- ✓Froth floatation.
- BSmelting.
- CMagnetic separation.
- DGravity separation.
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${\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+},\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+},\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+},}$
${\left[\mathrm{Cu}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+},\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}}$
$B$ is green colored compound then it would be
$Xe{F_6}\,\xrightarrow{{excess\,\,{H_2}O}}\,'X'\, + \,HF$
$Xe{F_6}\,\xrightarrow{{2\,moles\,{H_2}O}}\,'Y'\, + \,HF$