Question detail
What is the result of rusting on iron?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Using materials
Question
- A. Formation of a protective layer
- B. Strengthening of the metal
- C. Destruction of the metal structure
- D. Increase in electrical conductivity
Answer
The correct option is Destruction of the metal structure. This answer is correct because it matches the approved learning objective to interpret results from rusting experiments. (Chemistry only) in the subtopic Corrosion and its prevention.
Explanation
The correct option is Destruction of the metal structure. Destruction of the metal structure is correct because it directly supports the approved learning objective to interpret results from rusting experiments. (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
Misinterpreting Rusting Results
Students often confuse the presence of rust with the absence of rusting conditions, failing to recognize that rusting requires both air and water.
To fix this, students should remember that rusting occurs only when both air and water are present, and they should analyze experimental results to identify these conditions.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.