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प्रश्न
Observe the following circuits carefully. In which circuit will the bulb glow? Write Yes or No in the blank space provided along each of the circuit given in the figure.
|
(a) |
|
______ |
|
(b) |
|
______ |
|
(c) |
|
______ |
|
(d) |
|
______ |
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उत्तर
|
(a) |
|
No |
|
(b) |
|
Yes |
|
(c) |
|
No |
|
(d) |
|
Yes |
Explanation:
- Because piece of coal is a poor conductor of electricity.
- Because iron nail is a good conductor of electricity.
- Because eraser is a poor conductor of electricity.
- Because steel spoon is a good conductor of electricity.
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संबंधित प्रश्न
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?
In an electrolyte the current is due to the flow of ______.
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
One of the most common applications of chemical effect of electric current is ______.
Liquids that conduct electricity are the solutions of ______.
______ is used in the extraction and purification of metals.
Match the following
| 1. | Anode | a. | Conducting solution |
| 2. | Cathode | b. | Positive terminal |
| 3. | Ions | c. | Negative terminal |
| 4. | Electrolyte | d. | Positively or negatively charged |
Assertion: Parts of cars and bicycles are made iron with chromium coating.
Reason: Chromium does not corrode and resist scratches.
