Question

1.
When do we use handpicking as a method of separation ?
a) When the amount of impurities is less
b) When the size of impurities is large
c) When the impurities are insoluble in water
d) All of the above​

Answer 1

Answer:

The method of hand picking is used to separate those mixtures where one of the component is in small quantity. The method of hand picking is used to separate undesirable substances such as small pieces of stones from wheat, rice and pulses.

Explanation:

point a

Answer 2

Answer:

THE METHOD OF HANDPICKING IS USED WHEN THE SIZE OF IMPURITIES IS LARGE.