Q.1 The ratio of mass weight of oven dry soil solids to the volume of soil gives the_____________.
Bulk density Particle density Porosity
Q.2 The total quantity of water required for a life period of a crop is________.
Duty Delta Critical stage
Q.3 Capillary in soil pores is due to____________.
Adhesion Surface tension Cohesion
Q.4 1 atmosphere = -------------- cm of water column.
1023 1032 1013
Q.5 Which of the following soil water is available for normal crop growth?
Capillary Gravitational Hygroscopic
Q.6 Poor quality irrigation water is not suitable for use in___________.
Sprinkler Drip Trickle
Q.7 Water saving in trickle irrigation method ranging ___________.
40-60 % 50-60% 40-70 %
Q.8 One of the highest gravity dam in the world__________.
Shivasamudram Sardar sarovar Bhakra Nangal
Q.9 The device used to measure daily loss of water through evaporation________.
VSWB Pan evaporimeter USWB Pan Meter USWB Class-I open pan evaporimeter
Q.10 Applying irrigation through shallow furrows is called_____ .
Furrow method Corrugation Alternate furrows
Q.11 When all the pores are filled with water than soil is to be said saturated it is known as________.
Standing water Field capacity MWHC
Q.12 Boron is toxic beyond ________ ppm in irrigation water for most of the field crops.
4 2 2.5
Q.13 Water use efficiency is higher in ______ crops.
C3 CAM C4
Q.14 Metric potential is always______.
Zero Negative Positive
Q.15 Entry of water from the surface in to soil is termed as____________.
Infitration rate Infiltration Percolation
Q.16 The water lies between FC and PWP is known as _______water.
Free water Available Un available
Q.17 Salinity of irrigation water is measured in ________.
RAC SAR EC
Q.18 Artificial removal of excess water is called _______.
Drainage Irrigation Seepage
Q.19 One Cusec indicate ____.
28.32 litres/sec 1000 litres/sec 32.28 litres /sec
Q.20 Which of the following soils have longer strip of irrigation ?
Sandy Clayey Sandy loam
Q.21 Tensiometer is more suitable for ______soil.
Clay Sandy Silty
Q.22 The range of soil moisture(bars) at field capacity is________.
-0.6 to -0.5 -1 to -0.3 > -0.31
Q.23 In wheat crop the most critical stage for soil moisture is ____.
Tillring Jointing CRI
Q.24 Which crop among the following has the maximum duty of water?
Rice Tobacco Cotton
Q.25 Irrigation frequency depends on _________.
Soil Crop Both
Number of score out of 25 = Score in percentage =
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