10.3 Using materials

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Question 11

Before receiving a protective coating, four batches of uncoated steel washers are held under different conditions.

Batch	Condition
R	In dry air
S	In water in an open container
T	In water that has been boiled, with a layer of oil on top
U	Coated with grease, then placed in water in an open container

Which batch of washers will rust before the protective coating is applied?

[1]

Batch R

Batch T

Batch U

Batch S

Markscheme

10.3 Using materials Questions

GCSE
Chemistry
10.3 Using materials

118 exam-style questions on AQA GCSE Chemistry 10.3 Using materials, covering 10.3.1 Corrosion and its prevention, 10.3.2 Alloys as useful materials, and 10.3.3 Ceramics, polymers and composites. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank·10.3 Using materials