JSCE Basic Science 2024 Objective — Question 3
Question 3 of 85 from the Junior Secondary Certificate Examination (JSCE) Basic Science 2024 Objective paper, with the correct answer and a full explanation.
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The key to a classroom was discovered to have changed colour from silver to brown which indicates that rusting has taken place. How can this have been prevented?
- A. heating
- B. applying greaseCorrect
- C. applying petrol
- D. watering it
Explanation
Grease keeps out air and moisture, which stops rusting.
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