Match the definition in column I to their terms in column II and select the correct option.

Matrix:

Column I

Column II
a)
The process of separating grains from the stalk by beating the harvested crops.
i)
Evaporation
b)
The process of separating chaff from the grains by blowing air or wind.
ii)
Threshing
c)
The process in which liquid changes into gas.
iii)
Winnowing

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a – ii; b – iii; c – i

a – i; b – ii; c – iii

a – iii; b – i; c – ii

None of these

answer is A.

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Detailed Solution

The harvested crops are beaten either by hand or bullocks to separate the grains or seeds from the stalk. This process is called threshing. Nowadays, threshing is done using machines also. The chaff is removed from the grains by dropping the grains from a height on a windy day or by blowing air. This process is called winnowing. The process of changing a liquid into its vapour or gaseous form is termed evaporation.

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	Column I		Column II
a)	The process of separating grains from the stalk by beating the harvested crops.	i)	Evaporation
b)	The process of separating chaff from the grains by blowing air or wind.	ii)	Threshing
c)	The process in which liquid changes into gas.	iii)	Winnowing