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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Solution

1. True

2. True

3. False
Winnowing is followed by threshing.

4. False
Hand-picking is the method used to remove pebbles from grains. Winnowing is the method used to separate husk from grains.

5. False
Sugar is separated from sugar solution by evaporation. The water content in the sugar solution gets evaporated, leaving behind sugar.

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State whether the following statements are ‘True’ or ‘False’?

(a) A mixture of milk and water can be separated by filtration.

(b) A mixture of powdered salt and sugar can be separated by the process of winnowing.

(d) Grain and husk can be separated by the process of decantation.

Q. 44. Consider the following statements –
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Which of the above statement(s) is/are incorrect?

With respect to the following statements, choose the correct option.

(i) Winnowing is a time-consuming process for separating grain from chaff.
(ii) Fodder cannot be recovered by the process of winnowing.
(iii) Threshing is loosening of grain from chaff.
(iv) Traditional methods do not involve threshing.

Q. State whether the following statements are true or false.

(a) A mixture of oil and water can be separated by filtration.
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(b) winnowing
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(d) threshing

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