Question

hand packing involves separating undesirable solids impurities like stones husk etc from useful solids like grain and pulses by hand
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Answer 1

Answer:

HEY BUD!

Explanation:

Bring a packet of grain purchased from a shop to the classroom. Now, spread the grain on a sheet of paper. Do you find only one kind of grain on the sheet of paper? Are there pieces of stone, husks, broken grain and particles of any other grain in it? Now, remove with your hand the pieces of stone, husks and other grains from it.  

This method of handpicking can be used for separating slightly larger sized impurities like the pieces of dirt, stone, and husk from wheat, rice or pulses (Fig. 2).

Handpicking is a convenient method of separating substances, when the quantity of  impurities is usually not very large.