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प्रश्न
The process of coating the surface of the metal with a thin layer of zinc is called ______
पर्याय
painting
thinning
galvanization
electroplating
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उत्तर
The process of coating the surface of the metal with a thin layer of zinc is called galvanization.
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संबंधित प्रश्न
Which metals do not corrode easily?
The chemical reaction involved in the corrosion of iron metal is that of:
(a) oxidation as well as displacement
(b) reduction as well as combination
(c) oxidation as well as combination
(d) reduction as well as displacement
State two conditions for the rusting of iron.
Fill in the following blank with suitable word:
The corrosion of iron is called ................
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 ..................................................................
Write three methods of preventing rusting of iron.
_______ is an alloy made from iron, carbon and chromium.
Observe the following diagram and give answers.
- Name this method of prevention of corrosion.
- For prevention of which metal this method is used?
- What is used as anode in this method?
Galvanisation is a method of protecting iron from rusting by coating it with a thin layer of ____________.
State whether the following statement is true or false:
Ships suffer a lot of damage though they are painted.
