The following substances are put into the blast furnace while manufacturing iron : Iron ore, coke, limestone and hot air. In this context—
(i) What is the name of the most common ore of iron and what is its chemical formula ?
(ii) What is the purpose of using :
(a) The coke (b) The limestone
(iii) Write the equation for the reduction reaction which produces iron.
(iv) Name the substance which is collected along with cast iron at the bottom of the furnace.
(v) Write the chemical equation for the formation of the substance named in (iv) above.
