Which alloy is used for making statues and medals?

Name two metals which are purified by electrolytic refining. Mention the anode,cathode and the electrolyte used in the refining process. At which electrode would the pure metal be deposited?

What is the basic raw material used in the Contact Process for the production of sulfuric acid?

What are the constituent elements of stainless steel?

Which of the following is the formula of the iron ore haematite?

Explain the following:
$(a)$ $NaCl$ is not a conductor of electricity in solid state,whereas it does conduct electricity in aqueous solution as well as in molten state.
$(b)$ Iron articles are galvanised.
$(c)$ Metals like $Na, K, Ca$ and $Mg$ are never found in their free state in nature.