ICSE Class 10 Answered
(a) What is the major purpose of subjecting concentrated ore to either roasting or calcination?(b) Name the most common ore of Aluminium, Zinc and iron. Name the processes by which the named ores are concentrated. (c) Give balanced chemical equations for the following. (i) Aluminium hydroxide is heated. (ii) Zinc oxide is reduced. (iii) Formation of sodium aluminate on dissolving most common ore of Aluminium in suitable alkali. (d) Name a metal which reacts both with acids and alkalies to liberate Hydrogen. Give balanced chemical equation also.
Asked by Topperlearning User | 12 May, 2016, 04:51: PM
Expert Answer
Answered by | 12 May, 2016, 06:51: PM
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