Agriculture MCQs

Page No. 172

A structure made near weirs and barrages to facilitate the migration of fish up stream or down stream is called __________________?


aFish ladder

✓


bFish escape

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cFish pool

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dFish pond

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View Answer Fish ladder

Net irrigation + field irrigation losses are the requirement of _____________________?


aFull irrigation

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bField irrigation

✓


cFurrow irrigation

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dBasin irrigation

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View Answer Field irrigation

The method of irrigation in which each tree is surrounded by a border to form a pool when water is supplied is called ________________?


aFurrow irrigation

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bBasin irrigation

✓


cBorder irrigation

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dCheck irrigation

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View Answer Basin irrigation

Land containing high percentage of alkalies may be reclaimed by addition of_____________________?


aCaso4

✓


bGypsum

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cChemicals

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dCaCO3

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View Answer Caso4

If the duration of a unit hydrograph approaches zero, the resulting unit hydrograph is called __________________?


aInstantaneous unit hydrograph

✓


bIntensity unit hydrograph

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cUnit hydrograph

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dUnit hyetograph

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A plot of graphical representation showing river flow against time is called _____________________?


aMonograph

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bHyetograph

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cHydrograph

✓


dAll are correct

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View Answer Hydrograph

the phenomenon of evaporation from water surfaces, from soil surfaces around the plants and from plants and transpiration from plants is called ___________________?


aEvapotranspiration

✓


btranspiration

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cEvaporation

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dAll are correct

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View Answer Evapotranspiration

The centre of pressure of a plane submerged area which holds it in equilibrium is ____________________?


aAlways below the centre of gravity of the area

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bCoincident with centroid of area if its plane is vertical

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cAlways above the centroid of the area

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dIndependent of the inclination of area

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generally useful life of a reservoir is considered terminated when its -gross storage is reduced by _______________ of the design capacity of the reservoir?


a100%

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b80%

✓


c50%

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d20%

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View Answer 80%

Aeration holes are provided to reduce the inside saturation pressure ____________________?


aIn a weir with end contractions

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bIn a suppressed weir

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cIn a cippoletti weir

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dIn all weir

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View Answer In a suppressed weir

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