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प्रश्न
Fill in the following blanks with suitable words:
Tiffin boxes are electroplated with .............. but car bumpers are electroplated with ............... to protect them from rusting.
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उत्तर
Tiffin boxes are electroplated with tin but car bumpers are electroplated with chromium to protect them from rusting.
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संबंधित प्रश्न
Give reasons:
Platinum, gold and silver are used to make jewellery.
What type of chemical reaction is involved in the corrosion of iron?
Name the metal which is used for galvanising iron.
State two conditions for the rusting of iron.
Fill in the following blank with suitable word:
The corrosion of iron is called ................
Fill in the following blank with suitable word:
The process of depositing a thin layer of zinc on iron articles is called .............
Name two metals which resist corrosion due to the formation of a thin, hard and impervious layer of oxide on their surface.
Name five methods of preventing rusting of iron.
Name the metal which is a constituent of blood pigment?
Identify the process shown in the diagram and explain it in short
Give reason.
An iron article should be given a coat of paint
Stainless steel is an alloy of _______.
Pressure cooker : Anodizing : : Silver plated spoons : _______
Rusting of iron : Fe2O3 : : corrosion of copper : ______
Match the columns.
| Group A | Group B |
| 1) Electroplating | a) Pressure cooker |
| 2) Anodising | b) Silver plated spoons |
| c) Coating of tin on copper | |
| d) Coating of Zinc on iron |
Draw a neat labelled diagram.
Anodizing
Complete flow chart given below.
Identify the correct statement from the following:
Describe two changes that are harmful. Explain why you consider them harmful. How can you prevent them?
