Winnowing is used to separate the grain from the
(a) solvent
(b) sediment
(c) stalk
(d) chaff

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Solution

(d) chaff

Threshed grains may contain seed coverings and tiny pieces of stem or leaves collectively called chaff, which can be separated by winnowing.

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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

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. Match the items is Column A with the items in Column B

Column A	Column B
1. Separation of husk from grains	(a) Hand-picking
2. Conversion of liquid into vapour	(b) Filtration
3. Separating pebbles from pulses	(c) Threshing
4. Separating chalk powder from water	(d) Evaporation
5. Separating grains from the stalk	(e) Winnowing
	(f) Sieving

When winnowing is used to separate grains from husk, what is the correct observation?

Find the correct match of both the columns.

Machine/tool used Purpose

(i) Sickle (a) Separating grain and chaff
(ii) Harvester (b) Harvesting and threshing
(iii) Winnowing machine (c) Manual harvesting
(iv) Combine (d) Mechanical harvesting

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Winnowing is used to separate the grain from the (a) solvent (b) sediment (c) stalk (d) chaff

(d) chaffThreshed grains may contain seed coverings and tiny pieces of stem or leaves collectively called chaff, which can be separated by winnowing.

Winnowing is used to separate the grain from the
(a) solvent
(b) sediment
(c) stalk
(d) chaff

(d) chaff

Threshed grains may contain seed coverings and tiny pieces of stem or leaves collectively called chaff, which can be separated by winnowing.