Which among the following ores is concentrated by the froth flotation process?

Froth floatation process is used for the concentration of

During the extraction of sodium aluminate from bauxite,the compounds of ....... are insoluble and precipitate out.

Which substances are used as stabilizers in the froth flotation process?

The methods $NOT$ involved in the concentration of ore are:
$A$. Liquation
$B$. Leaching
$C$. Electrolysis
$D$. Hydraulic washing
$E$. Froth flotation
Choose the correct answer from the options given below:

Which of the following methods is used to separate wolframite and stannic oxide present in cassiterite?