Describe the role of
(i) NaCN in the extraction of gold from its ore.
(ii) Cryolite in the extraction of aluminium from pure alumina
(iii) CO in the purification of Nickel.

Write the role of : (i) NaCn in the extraction of gold from its ore. (ii) Cryolite in the extraction of aluminium from pure alumina. (iii) Co in the purification of Nickel.

Write the role of : (i) NaCn in the extraction of gold from its ore. (ii) Cryolite in the extraction of aluminium from pure alumina. (iii) Co in the purification of Nickel.

Describe the role of NaCN in the extraction of gold from gold ore.

Describe the role of NaCN in the extraction of gold from gold ore.

Describe the role of the following : (i) NaCN in the extraction of silver ore. (ii) Cryolite in the extraction of aluminium from pure alumina.

Describe the role of the following : (i) NaCN in the extraction of silver ore. (ii) Cryolite in the extraction of aluminium from pure alumina.

Write the role of (II)Cryolite in the extraction of aluminium from pure alumina.

NaCN in the extraction of silver from silver ore.

Describe the role of the following: Cryolite in the extraction of aluminium from pure alumina.

Describe the role of (i) NaCN in the extraction of gold from gold ore. (ii) SiO_(2) in the extraction of copper from copper matter. (iii) Iodine in the refining of zirconium. Write chemical equations for the involved reactions.