Question

how will you separate oil and water salt and water sand and water stone from rice

Answer 1

Separating oil and water can be done using separating funnel. The water settles at the bottom and releasing the stopcock can bring the water separated

Salt and water can be separated by evaporation by closing the beaker. The salt remains at the surface of the beaker and the water remains as water vapor.

Sand and water can be separated by using a filter paper