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प्रश्न
Which of the following metals is used in electroplating to make objects appear shining?
पर्याय
Iron
Copper
Chromium
Aluminium
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उत्तर
Chromium
Explanation:
Chromium is used for electroplating to make objects appear shining because chromium has a shiny appearance and it resists scratches.
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संबंधित प्रश्न
The passage of an electric current through a solution causes ______ effects.
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
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?
A chemical reaction happens when electricity passes through various conducting liquids.
The most common industrial application of chemical effects of electric current is ______.
The terminal which is connected to a positive terminal of a battery is called ______.
______ is used in the extraction and purification of metals.
Match the following
| 1. | Anode | a. | Conducting solution |
| 2. | Cathode | b. | Positive terminal |
| 3. | Ions | c. | Negative terminal |
| 4. | Electrolyte | d. | Positively or negatively charged |
