AP Police SI Exam Prelims 2016 Paper 2 (General Studies)
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Identify the correct statements from the following
I) Sulphide ores are purified by froth-floatation process
II) Smelting is generally done in Blast furnace
III) Zone refining method is for refining iron
IV) Aluminium is extracted from pyrolusite
I) Sulphide ores are purified by froth-floatation process
II) Smelting is generally done in Blast furnace
III) Zone refining method is for refining iron
IV) Aluminium is extracted from pyrolusite
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