Iron is produced in the blast furnace. waste gases raw materials hot air slag molten iron Which statement about this process is correct? 5070_w15_qp_11 MCQ 2015 Paper 1, Variant 1 View
An old commercial process for aluminium extraction used large quantities of sodium to convert aluminium ions into aluminium atoms. The modern aluminium extraction process uses electrolysis. Which statements are correct? 5070_w18_qp_11 MCQ 2018 Paper 1, Variant 1 View