Separation of substances Worksheet-8
Multiple-Choice Question:
(A) Pedal threshing (B) Manual threshing
(C) Machine threshing
(A) Cutting –> storing –> threshing –> drying –> storage
(B) Cutting –> threshing –> drying, cleaning –> storage
(C) Cutting –> threshing –> cleaning –> drying –> storage
(A) It combines cutting, threshing, cleaning and stores grain in a bin in one operation
(B) It is a fast threshing machine
(C) It dries the paddy
(A) supernatant (B) sediments (C) solution
(A) Until it reaches the desired moisture level
(B) Until it is dry
(C) As long as needed
(A) To loosen and separate the husk from the grain
(B) To minimize losses because of deterioration and shattering of grain
(C) Both of these
(A) Foot trampling (walking over) (B) Pedal thresher
(C) Winnowing
(A) Cleaning the thresher after use
(B) Removing moisture
(C) Removing dirt, chaff, straw from the grains
(A) It removes unwanted materials from the grain
(B) It is not important
(C) To improve the milling process
(A) supernatant (B) sediments (C) solution
Answer Key: