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प्रश्न
Prepare a list of objects around you that are electroplated.
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उत्तर
Examples of electroplated objects are as follows:
- Chromium plating is done on different parts of cars, buses and motor cycles to give them a shiny appearance.
- A fine layer of gold is deposited on the silver ornaments and they are called gold-plated ornaments.
- Iron used in constructing a building is coated with a layer of zinc. This protects iron from corrosion and rusting.
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संबंधित प्रश्न
The passage of an electric current through a solution causes ______ effects.
Name three liquids, which when tested in the manner shown in Figure, may cause the magnetic needle to deflect.
An electric current can produce
Boojho and Paheli performed experiments taking similar bulbs and cells but two different solutions A and B as shown in the following figure.
 |
 |
| Boojho's Experiment | Paheli's Experiment |
| (A) | (B) |
They found that the bulb in the setup A glows more brightly as compared to that of the setup B. You would conclude that
When electric current is passed through a conducting solution, there is a change of colour of the solution. This indicates
One of the most common applications of chemical effect of electric current is ______.
Paheli wants to deposit silver on an iron spoon. She took silver nitrate (AgNO3) solution in a beaker and set up a simple circuit for electroplating. Which terminal of the battery should the spoon be connected to? What material should the other electrode be made of?
Liquids that conduct electricity are the solutions of ______.
______ is used in the extraction and purification of metals.
Assertion: Parts of cars and bicycles are made iron with chromium coating.
Reason: Chromium does not corrode and resist scratches.
