Question 4

Which amongst the following methods would be most appropriate to separate grains from bundles of stalks?

(a) Hand picking

(b) Winnowing

(c) Sieving

(d) Threshing

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Solution

The grains are separated from stalks by the process of threshing. In this process stalks (of wheat, paddy, etc) are beaten to separate grains from the bundle of stalks.
Note: This method is based on the fact that the stalks (or stems) of the crop plant are soft material whereas the grains themselves are very hard.
Being soft, stalks can be broken into pieces on beating but the grains remain unaffected.

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Q. 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. Which amongst the following methods would be most appropriate to separate grains from bundles of stalks?

Question 1

Paheli bought some vegetables such as french beans, lady’s finger, green chillies, brinjals and potatoes all mixed in a bag. Which of the following methods of separation would be most appropriate for her to separate them?

(a) Winnowing

(b) Sieving

(d) Hand picking

Question 6

While preparing chapatis, Paheli found that the flour to be used was mixed with wheat grains. Which out of the following is the most suitable method to separate the grains from the flour?

(a) Threshing

(b) Sieving

(d) Filtration

What is winnowing, sieving, threshing, hand picking

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Question 4 Which amongst the following methods would be most appropriate to separate grains from bundles of stalks? (a) Hand picking (b) Winnowing (c) Sieving (d) Threshing

Question 4

Which amongst the following methods would be most appropriate to separate grains from bundles of stalks?

(a) Hand picking

(b) Winnowing

(c) Sieving

(d) Threshing