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Question
Name three liquids, which when tested in the manner shown in Figure, may cause the magnetic needle to deflect.
Solution
Tap water, hydrochloric acid, sodium hydroxide.
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RELATED QUESTIONS
The process of depositing a layer of any desired metal on another material by means of electricity is called ______.
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?
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Boojho's Experiment | Paheli's Experiment |
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(b) |
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(c) |
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(d) |
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