The process of separation, shown in the given picture is known as:

handpicking,

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threshing,

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winnowing

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sieving

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Solution

The correct option is D winnowing
This process is called winnowing. In it, light weight particles are separated from weight full particles with the help of air.

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Question 4
The term used for the process of separation of grains from the chaff is called
(a) sieving
(b) threshing
(c) winnowing
(d) hand picking

What is winnowing, sieving, threshing, hand picking

The term used for the process of seperation of grains from chaff is threshing whereas winnowing does the same task. So why is it that the term used is threshing and not winnowing?

Q. Match the following:-

	List I		List I
I.	Winnowing	A.	Irrigation
II.	Threshing	B.	Hoe
III.	Drip system	C.	Separation of grain and chaff
IV.	Weeds	D.	Separation of seeds and chaff

Q. Write True (T) or False (F) against the following statements in the given brackets:
1. Supernatant is the liquid found above the sediment. ( )
2. A pure substance has a fixed specific gravity. ( )
3. Threshing is following by winnowing. ( )
4. The process of winnowing is used to remove pebbles form grains. ( )
5. Sugar can be separated from sugar solution by decantation. ( )

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The process of separation, shown in the given picture is known as:

The correct option is D winnowingThis process is called winnowing. In it, light weight particles are separated from weight full particles with the help of air.

The correct option is D winnowing
This process is called winnowing. In it, light weight particles are separated from weight full particles with the help of air.