(a(i))[1]
Name the principal iron ore charged into the blast furnace.
(a(ii))[1]
Name the substance fed into the blast furnace at A.
(a(iii))[1]
Name the substance that acts as the reducing agent during extraction of iron in the blast furnace.
(a(iv))[3]
Explain why limestone is added to the blast furnace. Include the chemical reactions involved.
(b(i))[1]
State which listed property applies to sodium but not to iron.
(b(ii))[1]
State which listed property applies to iron but not to sodium.
(b(iii))[1]
State which listed property is true of both sodium and iron.
(b(iv))[1]
State which listed property is false for sodium and also false for iron.
(c(i))[2]
Explain, in terms of electrons, why magnesium is chosen for sacrificial protection.
(c(ii))[1]
Name a metal that cannot be used for sacrificial protection of steel.