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प्रश्न
Give reason why graphite is used for making elecrode in a dry cell.
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उत्तर
Graphite is a non-corrosive non-metal and a good conductor of electricity. It is also cheap and insoluble in water, acids and bases. It is inert (does not react) to the electrolytes present in the dry cells. Thus, it makes a good material for an electrode.
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संबंधित प्रश्न
Select the correct alternative
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- gases
- liquids
- solids
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Which one is a kind of matter:
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Sugar, Common salt
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| (A) | (B) | ||
| (a) | Pressure | (i) | cubic metre |
| (b) | Temperature | (ii) | kilogram |
| (c) | Density | (iii) | pascal |
| (d) | Mass | (iv) | kelvin |
| (e) | Volume | (v) | kilogram per cubic metre |
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