Irrigation Engineering
Pick up the correct statement from the following mention

All of these
Gravity water is harmful to crops
Capillary moisture held in the soil pores against gravity by surface tension, is utilised by plants
Hygroscopic water remains attached to soil molecules by chemical bond

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Irrigation Engineering
Which one of the following statements is correct?

All listed here
The canal system and the drainage system are complementary
The canal system runs on ridges, gets divided into smaller channels and spreads its water on the land
The drainage system runs along the lowest line, collects drainage water from the slopes and joins the main stream

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