Question

Which of the following ore is not concentrated by froth floatation process?

Solution

Correct option is

Pyrolusite

Pyrolusite (MnO2) is not a sulphide ore, so it is not concentrated by froth floatation process.

SIMILAR QUESTIONS

Q1

The electrolytic method of reduction is employed for the preparation of metals that

Q2

In alumino-thermite process, aluminium is used as

Q3

In the metallurgical extraction of zinc from ZnO, the reducing agent used is

Q4

In order to refine blister copper, it is melted in a furnace and is stirred with green logs of wood. The purpose is

Q5

The slag obtained during the extraction of copper from copper pyrites is composed of

Q6

Purest form of iron is

Q7

The cyanide process is used for obtaining

Q8

Of the following, which cannot be obtained by electrolysis of the aqueous solution of their salts?

Q9

Mond’s process is used for the purification of

Q10

Thermite is a mixture of