what is filtration,seiving,winnowing, handpicking
Answers
Answer:
filtration = Filtration is a process used to separate solids from liquids or gases using a filter medium that allows the fluid to pass through but not the solid. The term "filtration" applies whether the filter is mechanical, biological, or physical. The fluid that passes through the filter is called the filtrate.
sieving = Sieving is a physical mechanism of particle removal, where a particle is denied access through a pore or passageway that is smaller than the particle itself.
winnowing = Winnowing is an agricultural method developed by ancient cultures for separating grain from chaff. It can also be used to remove pests from stored grain. Winnowing usually follows threshing in grain preparation.
handpicking = Handpicking is a separation technique used to remove the unwanted impurities from the mixture by hand. It involves simply picking out substances by hand and separating them form others. Handpicking method can be used when items differ on the basis of color ,shape and weight.
Explanation:
1.Filtration is technically defined as the process of separating suspended solid matter from a liquid, by causing the latter to pass through the pores of a membrane, called a filter.
2.Sieving is a separation technique based on the difference in particle size. The sieve is responsible for retaining the larger particles.
3. Winnowing is used to separate heavier and lighter components of a mixture by wind or by blowing air. This process is used by farmers to separate lighter husk particles from heavier seeds of grain.
4.The process used to separate slightly larger particles from a mixture by hand is called handpicking. For example: Stone pieces can be separated from wheat or rice by handpicking.
Hope it helps you.