Question

77 A mixture of wheat grains and wheat flour can be separated by sieving.

• A. True
• B. False

Answer 1

The correct option is A True

Sieving is a method of separating particles from a mixture based on differences in particle size. The coarse particles are separated from the finer particles using sieve plates.

Example:

1. Impurities like unwanted particles or husk are removed from grains,
2. Wheat flour has some finely powdered wheat as well as some bigger impurities. When this flour is put through a sieve, the fine powder falls through the small holes in the sieve, while the thicker impurities remain as they are too big for these holes. And hence, the substances are separated

Final answer: The given statement is true.