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प्रश्न
What is the corrosion of iron known as?
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उत्तर
The corrosion of iron is known as rusting. Iron is a reactive metal and corrodes (rusts) in the presence of air (oxygen) and water (dampness).
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संबंधित प्रश्न
Write two methods of preventing the rusting of iron.
State two conditions for the rusting of iron.
In one method of rust prevention, the iron is not coated with anything. Which is this method?
What is corrosion?
Name five methods of preventing rusting of iron.
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What are the special properties of stainless steel?
Name an alloy of copper. State its chemical composition and any one use.
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Explain how the activity series accounts for each of the following:
tendency to corrosion
Complete the process of iron rusting by filling the blanks. Suggest a way to prohibit the process.
The iron rust is formed due to........................... reaction. Different
regions on iron surface become anode and cathode.
Reaction on anode region :
`F_e(s) → Fe^(2+) (aq) +2e^-`
Reaction on anode region :
`O_2(g) + 4H^+(aq) +............................ → 2H_2 O (l) `
When Fe2+ ions migrate from anode region they react with ................... to form Fe3+ ions.
A reddish coloured hydrated oxide is formed from ............... ions. It is called rust.
`2Fe_(3+) (aq) + 4H_2O(l) → ................. + 6H_+(aq) `
A way to prevent rusting ..................................................................
What is done to prevent corrosion of metals?
Answer the following question.
List two properties of alloys.
When one of the metals in an alloy is mercury the alloy is called _______.
Draw a neat labelled diagram.
Electrolysis
Complete flow chart given below.
What is rust?
Give the equation for the formation of rust.
Describe two changes that are harmful. Explain why you consider them harmful. How can you prevent them?
