Question

name the conditions under which handpicking in preferred​

Answer 1

Answer:

Hand-picking is preferred when the quantity of the mixture is small, the unwanted substance is present in smaller quantities, and the size, shape and colour of the unwanted substance are different from those of the useful one.

Answer 2

Answer:

Hand-picking is preferred when the quantity of the mixture is small, the unwanted substance is present in smaller quantities, and the size, shape and colour of the unwanted substance are different from those of the useful one.