Bioleaching is a method used to extract metals from low-grade ores. Which statement about bioleaching is correct?
It uses bacteria to produce solutions containing metal ions.
It involves growing plants in soil that contains metal compounds.
It involves heating the metal compounds with carbon.
It uses electricity to extract metals directly from biological fluids.
81 exam-style questions on OCR GCSE Chemistry Improving processes and products. Each one has a worked solution and a mark scheme showing where the marks go.