Advertisements
Advertisements
प्रश्न
Name three liquids, which when tested in the manner shown in Figure, may cause the magnetic needle to deflect.
उत्तर
Tap water, hydrochloric acid, sodium hydroxide.
APPEARS IN
संबंधित प्रश्न
The passage of an electric current through a solution causes ______ effects.
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?
In an electrolyte the current is due to the flow of ______.
Boojho’s uncle has set up an electroplating factory near his village. He should dispose off, the waste of the factory
When electric current is passed through a conducting solution, there is a change of colour of the solution. This indicates
Why is tin electroplated on iron to make cans used for storing food?
In the circuit given in the 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 be still deposited on the carbon rod? Explain your answer.
You are provided with a magnetic compass, an empty matchbox, a battery of two cells and connecting wires. Using these objects, how will you make a tester for testing an electric circuit? Draw the necessary circuit diagram and explain.
Liquids that conduct electricity are the solutions of ______.
