Preventing rusting by using sacrificial protection
1 mark · NormalWhich structure is commonly protected using sacrificial anodes made of zinc or magnesium?
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Correct option: Underground oil pipeline
Common mistakes: Selecting aluminium can or plastic bottle.
Show mark scheme and worked solution
Marking points
B1 · 1 mark · Chooses 'Underground oil pipeline'.
Worked solution
Structures like underground oil pipelines are protected using sacrificial anodes.