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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
Prepare a list of objects around you that are electroplated.
Electroplating is an example for ______.
An electric current can produce
Boojho’s uncle has set up an electroplating factory near his village. He should dispose off the waste of the factory
The object to be electroplated is taken as ______ electrode.
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?
A chemical reaction happens when electricity passes through various conducting liquids.
Liquids that conduct electricity are the solutions of ______.
Assertion: Parts of cars and bicycles are made iron with chromium coating.
Reason: Chromium does not corrode and resist scratches.
