Question

why does a lump of cotton wool sink in water

Answer 1

Lump of cotton wool sink in water as the accumulation of cooton at a place gives them strong bonding which in turn increases the density of cotton more than water, which leads to its sinking.

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Answer 2

Answer:

a lump of cotton wool has air trapped in bit in the spaces between the cotton wool when water is poured on it or lump of cotton wool in dipped in water the spaces are limited by guarantee registered trademarks or trademarks