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The most durable metal plating on iron to protect against corrosion is [1994]
- a)nickel plating
- b)copper plating
- c)tin plating
- d)zinc plating.
Correct answer is option 'D'. Can you explain this answer?
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The most durable metal plating on iron to protect against corrosion is...
This is because zinc has higher oxidation potential than Ni, Cu and Sn. The process of coating of iron surface with zinc is known as galvanization. Galvanized iron sheets maintain their lustrue due to the formation of protective layer of basic zinc carbonate.
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The most durable metal plating on iron to protect against corrosion is...
Understanding Corrosion Protection
Corrosion is a natural process that leads to the deterioration of metals, particularly iron, when exposed to moisture and air. To protect iron from corrosion, various metal plating techniques are employed. Among these, zinc plating is recognized as the most effective option.
Why Zinc Plating?
- Galvanic Protection: Zinc acts as a sacrificial anode. When iron is coated with zinc, it provides protection by corroding preferentially. If the zinc layer is scratched, it still protects the exposed iron by corroding first.
- Barrier Protection: The zinc layer serves as a physical barrier that prevents moisture and other corrosive agents from reaching the iron surface.
- Cost-Effectiveness: Zinc plating is relatively inexpensive compared to other plating methods, making it a popular choice for various applications.
Comparison with Other Plating Options
- Nickel Plating:
- Provides a shiny finish and moderate corrosion resistance.
- Less effective than zinc in protecting iron from corrosion.
- Copper Plating:
- Offers good conductivity but is prone to corrosion itself, especially when exposed to moisture.
- Tin Plating:
- Provides some corrosion resistance but is not as durable as zinc, especially in harsh environments.
Conclusion
Zinc plating stands out as the best choice for protecting iron against corrosion due to its dual action of barrier protection and sacrificial properties. By using zinc, metal products can have an extended lifespan, reducing maintenance costs and enhancing durability.
Corrosion is a natural process that leads to the deterioration of metals, particularly iron, when exposed to moisture and air. To protect iron from corrosion, various metal plating techniques are employed. Among these, zinc plating is recognized as the most effective option.
Why Zinc Plating?
- Galvanic Protection: Zinc acts as a sacrificial anode. When iron is coated with zinc, it provides protection by corroding preferentially. If the zinc layer is scratched, it still protects the exposed iron by corroding first.
- Barrier Protection: The zinc layer serves as a physical barrier that prevents moisture and other corrosive agents from reaching the iron surface.
- Cost-Effectiveness: Zinc plating is relatively inexpensive compared to other plating methods, making it a popular choice for various applications.
Comparison with Other Plating Options
- Nickel Plating:
- Provides a shiny finish and moderate corrosion resistance.
- Less effective than zinc in protecting iron from corrosion.
- Copper Plating:
- Offers good conductivity but is prone to corrosion itself, especially when exposed to moisture.
- Tin Plating:
- Provides some corrosion resistance but is not as durable as zinc, especially in harsh environments.
Conclusion
Zinc plating stands out as the best choice for protecting iron against corrosion due to its dual action of barrier protection and sacrificial properties. By using zinc, metal products can have an extended lifespan, reducing maintenance costs and enhancing durability.
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The most durable metal plating on iron to protect against corrosion is [1994]a)nickel platingb)copper platingc)tin platingd)zinc plating.Correct answer is option 'D'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about The most durable metal plating on iron to protect against corrosion is [1994]a)nickel platingb)copper platingc)tin platingd)zinc plating.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The most durable metal plating on iron to protect against corrosion is [1994]a)nickel platingb)copper platingc)tin platingd)zinc plating.Correct answer is option 'D'. Can you explain this answer?.
The most durable metal plating on iron to protect against corrosion is [1994]a)nickel platingb)copper platingc)tin platingd)zinc plating.Correct answer is option 'D'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about The most durable metal plating on iron to protect against corrosion is [1994]a)nickel platingb)copper platingc)tin platingd)zinc plating.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The most durable metal plating on iron to protect against corrosion is [1994]a)nickel platingb)copper platingc)tin platingd)zinc plating.Correct answer is option 'D'. Can you explain this answer?.
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