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Alternative Methods Of Extracting Metals (ht Only) (GCSE Chemistry)
The following is a GCSE Chemistry test covering 'Alternative Methods Of Extracting Metals (ht Only)' from the broader topic Using Resources. The test is geared towards the AQA exam board style syllabus.Incorrect: 0
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Why might an operator choose bioleaching for copper rather than directly using conventional cyanide leaching?
Which cost factor is likely to make alternative methods (bioleaching, phytomining) attractive for low-grade ores?
Which analytical measurement would help determine whether phytomining has successfully concentrated a target metal in harvested biomass?
Which consideration makes phytomining particularly attractive for waste dumps and mine tailings?
Which environmental concern is most directly reduced by replacing high-temperature smelting with phytomining or bioleaching for low-grade ores?
An economist compares two options to treat low-grade copper ore: conventional smelting or bioleaching + SX–EW. Which factor should be included in a life-cycle cost comparison that favors bioleaching?
A student claims: "Bioleaching produces no emissions and is therefore always environmentally superior to smelting." Which rebuttal is most accurate?
Which statement correctly compares electrolysis with carbon reduction for extracting a reactive metal such as aluminium?
When assessing total lifecycle environmental impact, which of these is an important consideration when choosing between smelting, bioleaching, and phytomining?
A company plans to replace part of its aluminium production with aluminium recovered by recycling. Which environmental benefit is most likely from this change?
Which of the following best summarises why electrowinning (EW) is paired with solvent extraction (SX) after bioleaching?
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