Question

when oil drops in water on road,it floats over and forms colourful filim why?​

Answer 1

Answer:

"Small amounts of oil are usually present on the road surface (for instance, lubricating oil from cars, trucks and bicycles). When it rains, drops of oil float on the layer of water that collects on the road because the density of oil is less than that of the water--the same reason that wood floats on water.

Answer 2

Answer:

Because the density of oil is less than that of water

Explanation:

Hope it helps u..