Irrigation Engineering
Groynes are generally built

All listed here
Perpendicular to the bank
Inclined up stream up to 30°
Inclined downstream up to 30°

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Irrigation Engineering
A water-logged land is found suitable for cultivation due to

Absence of aeration of soil from root zone of the plant
None of these
Ease of tillage for preparation of the field for optimum condition of germination
Regular supply of water to plants from the water table by capillary action

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