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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
If you pass current through copper sulphate solution, copper gets deposited on the plate connected to the ______ terminal of the battery.
Name three liquids, which when tested in the manner shown in Figure, may cause the magnetic needle to deflect.
Boojho’s uncle has set up an electroplating factory near his village. He should dispose off the waste of the factory
Observe the following circuits carefully. In which circuit will the bulb glow? Write Yes or No in the blank space provided along each of the circuit given in the figure.
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(a) |
|
______ |
|
(b) |
|
______ |
|
(c) |
|
______ |
|
(d) |
|
______ |
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.
A chemical reaction happens when electricity passes through various conducting liquids.
The most common industrial application of chemical effects of electric current is ______.
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 |
Assertion: Parts of cars and bicycles are made iron with chromium coating.
Reason: Chromium does not corrode and resist scratches.
What are anodes and cathodes?
