The practice of supplying water to crops at regular intervals of time is known as irrigation. Traditional as well as modem methods are used for irrigating crop fields.
Which of the following pairs of irrigational methods is traditional?
A
Chain pump and moat
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B
Sprinkler and drip system
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C
Moat and sprinkler system
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D
Drip system and chain pump
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Solution
The correct option is A Chain pump and moat Chain pump and moat are traditional methods of irrigation.
The chain pump is a form of water pump that uses an infinite chain to connect many circular discs. The chain travels through a tube that is slightly larger than the diameter of the discs, with one end dipping into the water. Water becomes caught between the discs as the chain is dragged up the tube, and is elevated to and discharged at the top.
Moat is a manual irrigation method. By this method, water is directly taken out of wells with the help of a pulley and is used to irrigate fields