Question

How can we separate a mixture of sand,salt and pepper powder?

Answer 1

Answer:

Using centrifugation

Explanation:

Centrifugation is a separation technique which works on the principal that denser substance deposits away from the center due to centrifugal forces.

Density of pepper < Density of salt < Density of sand

As such, they are obtained with pepper on top, followed by salt and then sand.