The mixture of dry leaves and sand can be separated using threshing.
False
Threshing involves separation of grain from the stalk on which it develops. In the process, the stalks are beaten manually on a flat surface. In the case given, we know that the sand and dried leaves have a large difference in their weight, i.e., the dried leaves are lighter than the sand, so they can be separated by winnowing. Winnowing is the method in which heavier components of the mixture are separated from the lighter substances with the help of wind. Hence, the dry leaves will get fly away with the wind while the denser sand will fall down.