Question

liquids generally have lower density than solids then why ice floats on water

Answer 1

Hey mate, here is your answer =
Liquids have lower density than solids but ice floats on liquid as ice is considered to be a solid form.

Hope it helps u dear :)

Answer 2

Ice in a fact is a solid but it has cage like structure and hence it's molecules have more empty spaces as compared to water so it has smaller density then water hence it floats on water