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प्रश्न
Boojho’s uncle has set up an electroplating factory near his village. He should dispose off the waste of the factory
विकल्प
in the nearby river
in the nearby pond
in the nearby cornfield
according to the disposal guidelines of the local authority
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उत्तर
according to the disposal guidelines of the local authority
Explanation:
In electroplating factory, the disposal of the used conducting solution is a major concern because it is a polluting waste, therefore it should be disposed off according to the disposal guidelines of the local authority.
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संबंधित प्रश्न
The passage of an electric current through a solution causes ______ effects.
Prepare a list of objects around you that are electroplated.
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?
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.
A chemical reaction happens when electricity passes through various conducting liquids.
Liquids that conduct electricity are the solutions of ______.
______ is used in the extraction and purification of metals.
State some advantages of electroplating.
