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10.3 Using materials

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Question 5

The zinc coating on an iron lamp post is scratched. The iron remains protected because the zinc corrodes in preference to the iron.

What is the name of this type of protection?

[1]
A

Oxide-layer protection

B

Barrier protection

C

Sacrificial protection

D

Electroplating protection

Markscheme

10.3 Using materials Questions

  1. GCSE
  2. /Chemistry
  3. /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.

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