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प्रश्न
Two methods by which rusting of iron can be prevented are ______ and ______.
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उत्तर
Two methods by which rusting of iron can be prevented are painting and galvanization.
Explanation:
Painting creates a protective barrier, while galvanization involves coating iron with zinc to prevent rust.
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संबंधित प्रश्न
What special name is given to the corrosion of iron?
What is meant by galvanisation? Why is it done?
Name the metal which is used for galvanising iron.
Tiffin boxes are electroplated with ______ but car bumpers are electroplated with ______ to protect them from rusting.
A metal X which is resistant to corrosion is produced by the electrolysis of its molten oxide whereas another metal Y which is also resistant to corrosion is produced by the reduction of its oxide with carbon. Metal X can be used in powder form in thermite welding whereas metal Y is used in making cathodes of ordinary dry cells.
- Name the metals X and Y.
- Which of the two metals is more reactive: X or Y?
- Name one ore or metal X. Also write its chemical formula.
- Name one ore of metal Y. Also write its chemical formula.
- Name one alloy of metal X and one alloy of metal Y.
Explain how the activity series accounts for each of the following:
tendency to corrosion
Write scientific reasons.
Lemon or tamarind is used for cleaning copper vessels turned greenish.
Write a short note on Alloying.
Give scientific reasons.
Silver amalgam is used for filling dental cavities.
Explain the chemical reactions in rusting of iron.
