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प्रश्न
In an electrolyte the current is due to the flow of ______.
पर्याय
electrons
positive ions
both (a) and (b)
neither (a) nor (b)
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उत्तर
In an electrolyte the current is due to the flow of electrons.
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संबंधित प्रश्न
The passage of an electric current through a solution causes ______ effects.
The process of depositing a layer of any desired metal on another material by means of electricity is called ______.
Electroplating is an example for ______.
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
The object to be electroplated is taken as ______ electrode.
Electroplating of ______ is done on objects like water taps and cycle bell to give them a shiny appearance.
Paheli set up an experiment using liquid A in the beaker as shown in the following figure. She observed that the bulb glows. Then she replaced the liquid A by another liquid B. This time the bulb did not glow. Boojho suggested replacing the bulb by an LED. They observed that the LED glows. Explain.
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?
In the circuit given as figure, Boojho observed that copper is deposited on the electrode connected to the negative terminal of the battery. Paheli tried to repeat the same experiment. But she could find only one copper plate. Therefore, she took a carbon rod as negative electrode. Will copper still be deposited on the carbon rod? Explain your answer.
Assertion: Parts of cars and bicycles are made iron with chromium coating.
Reason: Chromium does not corrode and resist scratches.
