Question

kerosene and mustard oil do not dissolve in water even on shaking the separate after sometime farming two different layers explain why

Answer 1

because all types of oil is lighter then water .so it cannot dissolved in water
OK bay

Answer 2

Kerosene and mustard oil do not dissolve in water because, it depends on density.

Density of water is 997 kg/cu.m
Density of kerosene is 0.81 g/cu.cm
Density of mustard oil is 0.9 g/cu.cm