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 settles at the bottom and which rises to the top?

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

Answer 1

The correct option is B Water settles at the bottom and kerosene rises to the top.

It is based on the density of the liquids. The liquid that is lighter (lesser density) rises above the liquid having a higher density.
In this case, kerosene has density of 820 kg/m3 and water has 1000 kg/m3. So, kerosene rises to the top.