How do you separate adulterated urad dal from papaya seeds?

1. Visual inspection: Papaya seeds are larger and flatter than urad dal. They also have a darker color and a more wrinkled surface. By carefully inspecting the dal, you can identify and remove the papaya seeds.

2. Water test: Papaya seeds float in water, while urad dal sinks. Place the dal in a bowl of water and stir it. The papaya seeds will rise to the surface, while the urad dal will settle at the bottom. You can then skim off the papaya seeds and discard them.

3. Blowing method: Papaya seeds are lighter than urad dal, so they can be separated by blowing. Hold a handful of dal in your hand and blow gently. The papaya seeds will be carried away by the wind, while the urad dal will remain in your hand.

4. Sieving: Use a sieve with holes that are small enough to allow the urad dal to pass through but large enough to retain the papaya seeds. Pour the dal into the sieve and shake it gently. The urad dal will fall through the holes, while the papaya seeds will remain on top.

5. Color sorting: Papaya seeds have a different color than urad dal. You can use a color sorter machine to separate the two. The color sorter machine will detect the difference in color and separate the papaya seeds from the urad dal.