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Stainless steel does not rust because
- a)Chromium and nickel combine with iron
- b)Chromium forms an oxide layer and protects iron from rusting
- c)Nickel present in it, does not rust
- d)Iron forms Ahard chemical compound with chromium present in it
Correct answer is option 'B'. Can you explain this answer?
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Stainless steel does not rust becausea)Chromium and nickel combine wi...
Chromium is more electropositive metal than iron. In stainless steel, chromium forms an oxide layer and thus it protects steel from corrosion.
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Stainless steel does not rust becausea)Chromium and nickel combine wi...
Understanding Rust and Stainless Steel
Rusting is a common form of corrosion that affects metals, particularly iron, when it reacts with oxygen and moisture. However, stainless steel exhibits remarkable resistance to rusting due to its unique composition.
Chromium's Role
- One of the key elements in stainless steel is chromium, which is typically present in amounts greater than 10.5%.
- When stainless steel is exposed to oxygen, chromium reacts to form a thin, protective layer of chromium oxide on the surface.
Protective Oxide Layer
- This chromium oxide layer is self-healing; if the surface is scratched or damaged, it can reform in the presence of oxygen.
- The layer acts as a barrier, preventing moisture and oxygen from reaching the underlying iron.
Resistance to Corrosion
- As a result, the iron in stainless steel does not undergo the oxidation process that leads to rust (iron oxide formation).
- This property allows stainless steel to maintain its aesthetic appearance and structural integrity over time, even in harsh environments.
Nickel and Other Alloys
- While nickel is another alloying element in many stainless steels, its primary role is to enhance the steel's toughness and ductility, rather than directly preventing rust.
- Therefore, while nickel contributes to the overall performance of stainless steel, it is chromium that is crucial for rust prevention.
In summary, the protective chromium oxide layer formed on stainless steel is the key reason it does not rust, making option 'B' the correct answer.
Rusting is a common form of corrosion that affects metals, particularly iron, when it reacts with oxygen and moisture. However, stainless steel exhibits remarkable resistance to rusting due to its unique composition.
Chromium's Role
- One of the key elements in stainless steel is chromium, which is typically present in amounts greater than 10.5%.
- When stainless steel is exposed to oxygen, chromium reacts to form a thin, protective layer of chromium oxide on the surface.
Protective Oxide Layer
- This chromium oxide layer is self-healing; if the surface is scratched or damaged, it can reform in the presence of oxygen.
- The layer acts as a barrier, preventing moisture and oxygen from reaching the underlying iron.
Resistance to Corrosion
- As a result, the iron in stainless steel does not undergo the oxidation process that leads to rust (iron oxide formation).
- This property allows stainless steel to maintain its aesthetic appearance and structural integrity over time, even in harsh environments.
Nickel and Other Alloys
- While nickel is another alloying element in many stainless steels, its primary role is to enhance the steel's toughness and ductility, rather than directly preventing rust.
- Therefore, while nickel contributes to the overall performance of stainless steel, it is chromium that is crucial for rust prevention.
In summary, the protective chromium oxide layer formed on stainless steel is the key reason it does not rust, making option 'B' the correct answer.
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Stainless steel does not rust becausea)Chromium and nickel combine with ironb)Chromium forms an oxide layer and protects iron from rustingc)Nickel present in it, does not rustd)Iron forms Ahard chemical compound with chromium present in itCorrect answer is option 'B'. Can you explain this answer?
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Stainless steel does not rust becausea)Chromium and nickel combine with ironb)Chromium forms an oxide layer and protects iron from rustingc)Nickel present in it, does not rustd)Iron forms Ahard chemical compound with chromium present in itCorrect answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Stainless steel does not rust becausea)Chromium and nickel combine with ironb)Chromium forms an oxide layer and protects iron from rustingc)Nickel present in it, does not rustd)Iron forms Ahard chemical compound with chromium present in itCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Stainless steel does not rust becausea)Chromium and nickel combine with ironb)Chromium forms an oxide layer and protects iron from rustingc)Nickel present in it, does not rustd)Iron forms Ahard chemical compound with chromium present in itCorrect answer is option 'B'. Can you explain this answer?.
Stainless steel does not rust becausea)Chromium and nickel combine with ironb)Chromium forms an oxide layer and protects iron from rustingc)Nickel present in it, does not rustd)Iron forms Ahard chemical compound with chromium present in itCorrect answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Stainless steel does not rust becausea)Chromium and nickel combine with ironb)Chromium forms an oxide layer and protects iron from rustingc)Nickel present in it, does not rustd)Iron forms Ahard chemical compound with chromium present in itCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Stainless steel does not rust becausea)Chromium and nickel combine with ironb)Chromium forms an oxide layer and protects iron from rustingc)Nickel present in it, does not rustd)Iron forms Ahard chemical compound with chromium present in itCorrect answer is option 'B'. Can you explain this answer?.
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