Question

The ore that is concentrated by froth floatation process is

Solution

Correct option is

Cinnabar

Cinnabar (HgS) is a sulphide ore, hence it is concentrated by froth floatation process.

SIMILAR QUESTIONS

Q1

Which of the following is correct?

Q2

Metals found in free as well as combined states are

Q3

By which of the following processes, the ore is made porous?

Q4

Stainless steel has iron and

Q5

Thermite process is used in reduction of

Q6

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

Q7

 

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

Q8

Willemite is

Q9

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

Q10

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