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The flow chart below illustrates the industrial extraction of lead metal. Study it and answer the questions that follow.
(i) Name the ore that is commonly used in this process.
(ii) Explain what takes place in the roasting furnace.
(iii) Identify gas p.
(iv) Write the equation for the main reaction that takes place in the smelting furnace.
(v) What is the purpose of adding iron in the smelting furnace?
(vi) Give two environmental hazards likely to be associated with extraction of lead.
(b) Explain why hard water flowing in lead pipes may be safer for drinking than soft water flowing in the same pipes.
(c) State one use of lead other than the making of lead pipes.