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प्रश्न
Which of the following metals is used in electroplating to make objects appear shining?
विकल्प
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.
The process that you saw in the image is used for the purification of copper. A thin plate of pure copper and a thick rod of impure copper are used as electrodes. Copper from impure rod is sought to be transferred to the thin copper plate. Which electrode should be attached to the positive terminal of the battery and why?
Electroplating is an example for ______.
Boojho’s uncle has set up an electroplating factory near his village. He should dispose off the waste of the factory
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.
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 ______.
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?
