Electrometallurgy

Q.

The branch of electrometallurgy comprises

1. Electrolytic refining

2. Electroplating

3. Electrolytic extraction

4. All of the above

Q.

A scrap metal dealer gets a huge consignment of crude metallic Lead. For a profitable deal he needs to refine the metal using electrolysis. Which one of the following is a good choice for an electrolyte?

1. PbI₂

2. PbCl₂

3. PbSiF₆

4. All of the above

Q.

In general, electrolytic refining is a process of purification of impure metal during which an electric current is passed through an electrolytic cell which contains impure metal as anode, a suitable electrolyte and pure metal as cathode.

1. False

2. True

Q.

In the electrolytic refining process of Zinc, it is given that the crude metal is made anode while the electrolyte is used is $H_{2}S{O}_4$ (dilute) + $ZnS{O}_4$ . The cathode should be:

1. Zn-Hg Amalgam

2. Aluminum

3. All of the above

4. Pure Zinc

Q. The metal that cannot be obtained by electrolysis of an aqueous solution of its salts is:

1. Ag
2. Ca
3. Cu
4. Cr

Q. In general, electrolytic refining method contains the pure metal as the anode

1. True
2. False

Q.

In the ore Bauxite $A{l}_2{O}_3.2H_{2}O$ there are two significant types – Red Bauxite and White Bauxite. Bayer’s process is applicable for __ Bauxite.

Q.

What is the role of graphite rod in the electrometallurgy of aluminimum ?

Q.

What should be the considerations during the extraction of metals by electrochemical method?

Q.

The element which could be extracted by electrolytic reduction of its oxide dissolved in a high temperature melt is:

1. Sodium
2. Potassium
3. Fluorine
4. Aluminium