Name the following:
An ore of zinc containing its sulphide.

Name the following:
An alloy of lead and tin that is used in electrical circuits.

Answer the following questions with respect to the electrolytic process in the extraction of aluminium:
Identify the components of the electrolyte other than pure alumina and the role played by each.

Name the following:
The process of coating of iron with zinc.

Complete the following by selecting the correct option from the choices given:

The metal which does not react with water or dilute H₂SO₄ but reacts with
concentrated H₂SO₄ is _________. (Al/Cu/Zn/Fe)

The divalent metal whose oxide is reduced to metal by electrolysis of its fused salt is __________. (Al/Na/Mg/K)

Answer the following questions with respect to the electrolytic process in the extraction of aluminium:
Explain why powdered coke is sprinkled over the electrolytic mixture.

Complete the following by selecting the correct option from the choices given:
The metal whose oxide, which is amphoteric, is reduced to metal by carbon
reduction ____________. (Fe/Mg/Pb/Al)