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प्रश्न
Mention two uses of the following metals and non-metals
Iron
एका वाक्यात उत्तर
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उत्तर
It is used to make pipes, tanks, railing, etc.
It is used in the construction of power transmission towers.
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संबंधित प्रश्न
Explain the term corrosion.
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Name two metals which resist corrosion due to the formation of a thin, hard and impervious layer of oxide on their surface.
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Identify the process shown in the diagram and explain it in short
Write a short note on Alloying.
The process of coating the surface of the metal with a thin layer of zinc is called ______
A man painted his main gate made up of iron, to
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- protect it from sun.
- make it look beautiful.
- make it dust free.
Which of the above statement(s) is/are correct?
| A process of forming a thick oxide of aluminium when aluminium is exposed to air. This coat makes it resistant to corrosion. Resistance can be improved by making a layer of oxide thinker. In this technique, the aluminium article is the anode, and the electrolyte is sulphuric acid. The anode reaction results in the formation of a black-coloured film of aluminium oxide on the anode. By putting appropriate dyes in the electrolytic solution, both coloured surface with the decorative finish is achieved. Kitchen articles like anodised such as pressure cookers, pans and frames of sliding windows are applications of this technique. |
- Name the anode and electrolyte used in this technique.
- How can we make aluminium articles made resistant to corrosion?
- Name the technique used to coat the aluminium articles.
