Question

A mixture of kerosene oil and water is an example of immiscible liquids. When left undisturbed, they form separate layers of oil and water. Can you identify which liquid comes to the bottom and at the top?

• A. Water comes to the top side and kerosene at the bottom
• B. Water comes to the bottom and kerosene at the top side
• C. Top - Kerosene; Middle - Water; Bottom - Kerosene
• D. Both get mixed well and it cannot be differentiated

Answer 1

The correct option is B Water comes to the bottom and kerosene at the top side

It is based on the density of the liquids. The liquid that is lighter (lesser density) goes to the top of the other liquid having a higher density.
In this case, kerosene has a density of $820\frac{kg}{m^3}$ and water has $1000\frac{kg}{m^3}$. So, kerosene remains at the top.