Question

Extraction for zinc from zinc blende is achieved by

Solution

Correct option is

Roasting followed by reduction with carbon

 

Zinc blende is roasted and then treated with coke for the reduction.

              

                 

SIMILAR QUESTIONS

Q1

Thermite process is used in reduction of

Q2

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

Q3

 

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

Q4

Willemite is

Q5

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

Q6

The ore that is concentrated by froth floatation process is

Q7

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

Q8

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?

Q9

Calamine is

Q10

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