Answer:
(a)
Aluminium is manufactured by the electrolysis of its molten
oxide (1)
(b) Zinc, beine more reactive used to galvanise iron.
(1)
(c) Copper is alloyed with zinc to make brass.
(1)
(d) Iron reacts with aqueous copper (II) sulphate. (1)
(e) Iron reacts with steam, but has no reaction with cold
water. (1)
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