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प्रश्न
How will you separate a mixture of iron filings and powdered carbon ?
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उत्तर
We can separate a mixture of iron filings and powdered carbon by using a magnet. The principle behind the separation of iron fillings and powdered carbon is the property of iron to get attracted by magnets. When the magnet is brought close to the mixture, iron fillings are attracted by the magnet and get collected on the surface of the magnet. In the process, powdered carbon is left behind as residue.
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संबंधित प्रश्न
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Fill in the following blanks with suitable words :
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Starch solution, Sugar solution, Ink, Salt solution, Copper sulphate solution, Ammonium chloride solution, Fog, Smoke, Car exhausts.
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cement for plastering the walls. Q is a white solid which is recovered on a large scale from sea water by the
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S is a white solid which is used in making ordinary dry cells.
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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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(i) ice
(ii) wood
(iii) soil
(iv) air
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