Question detail

What happens to the zinc coating during galvanising?

Try the question, check the answer, then read the explanation to understand the curriculum point.

Show answer Topic hub Objective page

At a glance

MCQ

Type

practice

Style

Topic

Using materials

Question

A. It evaporates during the process
B. It forms a strong bond with the iron
C. It becomes a liquid
D. It is painted over with another material

Answer

The correct option is It forms a strong bond with the iron. This answer is correct because it matches the approved learning objective to describe galvanising as using zinc to protect iron. (Chemistry only) in the subtopic Corrosion and its prevention.

Explanation

The correct option is It forms a strong bond with the iron. It forms a strong bond with the iron is correct because it directly supports the approved learning objective to describe galvanising as using zinc to protect iron. (Chemistry only). This belongs to the subtopic Corrosion and its prevention within Using materials, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from Corrosion and its prevention.

Common mistake

Misunderstanding Galvanising

Students often think galvanising involves coating iron with zinc to prevent rusting, but they confuse it with other protective methods.

Clarify that galvanising specifically refers to the process of applying a protective zinc coating to iron to prevent corrosion.

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