You can separate the iron filling from the mixture by using magnet , because we know iron filling can easily attracted towards the magnets, and the mixture of sand and sawdust can be separate when we put the mixture into the water. then you can easily separate the sawdust and sand :)
Answer:
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Explanation:
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When raisins are placed in water and sit overnight, endosmosis takes place. Water goes into the raisins from the surrounding. Due to this endismosis, the raisins gain water and become larger in volume.
Since raisins absorbed some water, the volume of water from the container decreases.