Rehan filters out tea leaves from the prepared tea with a strainer. The separation technique he used is _______.
filtration
Filtration helps to remove the suspended impurities. The mixture which contain insoluble solid particles suspended in a liquid are passed through a filter paper. The filter paper has minute pores that trap the solid particles.
In the given example, the size of tea leaves are large enough, so they can be easily separated from the prepared tea by filtration.