Question

cotton is solid but it floats on water. why?

Answer 1

${\huge {\underline {\mathfrak {\orange {Answer}}}}}$

Cotton has a large number of pores, in which air is trapped. This results in the decrease of density and increase of volume. So it floats on water.

Answer 2

Cotton is a solid but it floats on water because it's density is less than water. This is why, cotton being a solid floats on water