Irrigation Engineering
If water table is comparatively high, the irrigation canal becomes useless, due to

All of these
Large amount of seepage
Uncertain water demand
Water logging of the cultivated areas

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Irrigation Engineering
Pick up the correct statement from the following sentence

Escapes are essential safety valves in a canal system
The escapes are aligned to take advantage of contours of lower values
All of these
The escapes must lead the surplus water to natural drainages

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