Lesson 5.10.1.4
5.10.1.4 Alternative methods of extracting metals (HT only) Quiz: AQA Combined Science, Unit 17
20 questions
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Lesson 5.10.1.4, Alternative methods of extracting metals (HT only): 20 multiple choice questions for the AQA GCSE Combined Science (8464), Unit 17: Using resources, written with Revision Ninja.
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The 20 questions
-
Which method uses plants to absorb metal compounds?
- Distillation
- Bioleaching
- Phytomining
- Electrolysis
-
Which method uses bacteria to produce solutions containing metal compounds?
- Smelting
- Phytomining
- Fractional distillation
- Bioleaching
-
What is done to harvested phytomining plants to produce metal-containing ash?
- Crushed
- Filtered
- Smelted
- Burned
-
Which metal is used in the spec's example of displacing copper from solution?
- Silver
- Gold
- Helium
- Iron
-
Which process can extract copper from a solution of copper compounds?
- Neutralisation
- Filtration
- Distillation
- Electrolysis
-
Why are alternative copper extraction methods increasingly needed?
- Plants are cheap
- Ores are scarce
- Metals are reactive
- Energy is free
-
What is the name of the solution produced by bioleaching?
- Filtrate
- Leachate
- Ash
- Sludge
-
Which traditional mining activity do phytomining and bioleaching avoid?
- Adding carbon
- Heating metal
- Cooling molten rock
- Digging large rock
-
What do phytomining plant ashes contain that allows further metal extraction?
- Molten slag
- Scrap iron
- Pure copper metal
- Metal compounds
-
Which chemical is added to copper solutions during displacement extraction?
- Zinc powder
- Scrap iron
- Magnesium ribbon
- Copper scrap
-
What is a major advantage of biological metal extraction methods?
- Zero waste water
- Avoids mass digging
- High purity output
- Immediate results
-
Which extraction method uses bacteria to process low-grade ores?
- Electrolysis
- Phytomining
- Bioleaching
- Smelting
-
A copper sulfate solution has scrap iron added, and copper forms on the iron. What type of reaction is this?
- Combustion
- Displacement
- Neutralisation
- Thermal decomposition
-
Why is scrap iron used to extract copper from solutions?
- To neutralize acid
- To displace copper
- To heat mixture
- To filtrate solution
-
What is a main limitation of phytomining compared to traditional mining?
- Expensive land
- Very slow
- High toxicity
- Requires electricity
-
What living organism does bioleaching rely on to extract metals?
- Algae
- Bacteria
- Fungi
- Plants
-
Why must the ash obtained from phytomining undergo further processing?
- Extract metal
- Cool down
- Dry crystals
- Remove soil
-
What type of ore are phytomining and bioleaching mainly used for?
- High-grade ores
- Molten rock
- Pure metal nuggets
- Low-grade ores
-
What type of organism is used in phytomining to absorb metal compounds?
- Bacteria
- Algae
- Fungi
- Plants
-
What is the correct sequence of steps in phytomining?
- Absorb, harvest, burn
- Heat, filter, crystallise
- Dig, smelt, purify
- Crush, leach, electrolysis
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