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प्रश्न
Name a common metal which is highly resistant to corrosion.
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उत्तर
Aluminium
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संबंधित प्रश्न
Explain why Iron sheets are coated with zinc during galvanization.
Explain why, iron sheets are coated with zinc.
What is corrosion?
What is the corrosion of iron known as?
What are the constituents of stainless steel?
In stainless steel alloy, iron metal is mixed with ______.
Brass is an alloy of ______.
Name the metal which is a constituent of blood pigment?
Answer the following question:
What is corrosion? Do gold ornaments corrode? Justify.
_______ is an alloy made from iron, carbon and chromium.
To prevent corrosion of iron and steel _______ method is used.
Pressure cooker : Anodizing : : Silver plated spoons : _______
Write scientific reason.
On exposure to air, silver articles turn blackish after some time.
Write scientific reason.
Coins are made from metals and alloys.
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?
Observe the following figure and write the answer of the question.
- Which process is shown in the figure?
- Explain the chemical reaction shown in the figure.
- Write the reactions on anode and cathode.
The process of coating the surface of the metal with a thin layer of zinc is called ______
Copper objects lose their shine and form green coating of ____________.
The table shown below gives information about four substances: A, B, C and D.
| SUBSTANCE | MELTING POINT (K) | ELECTRICAL CONDUCTIVITY | |
| SOLID | LIQUID/ AQUEOUS | ||
| A | 295 | Good | Good |
| B | 1210 | Poor | Good |
| C | 1890 | Poor | Good |
| D | 1160 | Poor | Poor |
Identify Ionic compounds from the above given substances.
