Question

Study the table given below.
$$\begin{array}{ccc}\text{Mixture}& \text{Wanted Component}& \text{Unwanted Component}\\ \text{Wheat Flour}& \text{Flour}& \text{X}\\ \text{Y}& \text{Grain seeds}& \text{Stalks}\end{array}$$Based on the above information, identify X and Y.

• A. X = Husk
  Y = Paddy
• B. X = Wheat
  Y = Husk
• C. X = Wheat
  Y = Sawdust
• D. X = Husk
  Y = Sand

Answer 1

The correct option is A X = Husk

Y = Paddy
In wheat flour, flour is the wanted component while husk X is the unwanted component. The method used will be sieving which is a method of separation of particles from a mixture based on the difference in the size of particles.
When paddy Y stalks are beaten on a stone, the grain seeds separate from their stalks. The method used will be threshing which is a process of separation of grain from the stalk on which it develops and from the chaff or unit that covers it.