Question

The mixture of pebbles and sand can be separated by using handpicking.
A.True
B.False

Answer 1

Hint:Handpicking is the method where we can separate using our hands. If the bigger particles are present in the mixture then we can separate them using handpicking.

Complete answer:
We encounter a number of products around us most of them are not in a pure state and are present in mixture form. So we need to use certain separation techniques to separate the particles from each other. These techniques vary from each other depending upon the nature of mixture. We usually use these separation methods to remove the unwanted material but they can also be used for separation of two pure substances. There are various methods of separation such as, handpicking, threshing, winnowing, sieving, evaporation, distillation, filtration, separating funnel and magnetic separation.
Handpicking method is a very simple method which involves picking up unwanted particles using our hands thus separating the useful components. It is very cost effective as it does not use any mechanical devices. Pebbles are the large particles which can easily be separated from sand using handpicking. Hence the given statement is true.

Thus, the correct option is A.

Note:
Salt solution can be separated from water using evaporation. A mixture of sand and water can be separated using filtration. The chaff can be separated from wheat or rice using winnowing. Sieving is used to separate very fine particles, where the size of impurity is greater than the size of pores of sieve. Magnetic separation is used when there is some magnetic material such as iron present as the impurity.