Alternative Methods Of Extracting Metals (ht Only) (GCSE Chemistry)

Which consideration makes phytomining particularly attractive for waste dumps and mine tailings?

Which metal is typically extracted by electrolysis of a molten oxide rather than by reduction with carbon because it is more reactive than carbon?

Which of the following best describes phytomining as an alternative method to extract a metal from low-grade ore?

In solvent extraction/electrowinning (SX-EW) used after bioleaching, what is the main purpose of the solvent extraction stage?

When assessing total lifecycle environmental impact, which of these is an important consideration when choosing between smelting, bioleaching, and phytomining?

Which of the following is an advantage of phytomining compared with traditional mining of low-grade ore?

Which analytical measurement would help determine whether phytomining has successfully concentrated a target metal in harvested biomass?

Which safety or environmental hazard is specifically associated with bioleaching heaps that operators must manage?

A company considers bioleaching to extract copper from a heap of low-grade ore. Which factor would most reduce the effectiveness of bioleaching?

Which cost factor is likely to make alternative methods (bioleaching, phytomining) attractive for low-grade ores?

Which environmental concern is most directly reduced by replacing high-temperature smelting with phytomining or bioleaching for low-grade ores?