Question

Which one of the following ores is best concentrated by froth-floatation method?

Solution

Correct option is

Galena

 

Froth-floatation is used to concentrated sulphide ores

[Galena (PbS)].

SIMILAR QUESTIONS

Q1

Bauxite ore is made up of Al2O3 + SiO2 + TiO2 + Fe2O3. This ore is treated with conc. NaOH solution at 500 K and 35 bar pressure for few hours and filtered when hot. In the filtrate, the species present are

Q2

 

When copper pyrites is roasted in excess of air, a mixture of CuO + FeO is formed. FeO is present as impurities. This can be removed as slag during reduction of CuO. The flux added to form slag is

Q3

Willemite is

Q4

The temperature of the slag zone in the metallurgy of iron using blast furnace is

Q5

The ore that is concentrated by froth floatation process is

Q6

Native silver metal forms a water soluble complex with a dilute aqueous solution of NaCN in the presence of

Q7

Which of the following factors is of no significance for roasting sulphide ores to the oxidexs and not subjecting the sulphide ores to carbon reduction directly?

Q8

Calamine is

Q9

Extraction for zinc from zinc blende is achieved by

Q10

The method of zone refining of metals is based on the principle of