Single Answer MCQ
Q-00019681
What protective measure can prevent iron from rusting?
1
Keeping it dry
2
Painting or galvanising
3
Using pure iron
4
Storing in sunlight
Answer and Solution
Answer
B. Painting or galvanising
Solution:
Painting or galvanising (coating with zinc) prevents rusting by forming a barrier that keeps moisture and oxygen away from the iron surface. Keeping it dry helps but may not be practical for long-term prevention.
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