B. Give reasons for the following statements. 1. A cork floats on water surface but an iron nail sinks in it. 8 2. Ice floats on water. 3. A block of aluminium sinks in turpentine but floats in mercury. 4. 1 cm3 block of wood weighs lesser than 1 cm block of iron. 5. The solids have the highest density.
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A cork floats on the surface of water but sn iron nail sinks in it because the density of the cork is much less than that of water whereas the density of an iron nail is much more than water. The upthrust of water on the cork is greater than the weight of the cork. Hence it floats.
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