The ratio of the quantity of water stored in the root zone of the crops to the quantity of water actually delivered in the field is known as__________________?

Related Mcqs:

1. Irrigation water having the concentration of Na++ , Ca++ and Mg++ as 20, 3 and 1 Milli equivalent per litre respectively will be classified as__________________?

   A. low sodium water
   B. medium sodium water
   C. high sodium water
   D. very high sodium water

2. The water stored in the reservoir below the minimum pool level is called_______________?

   A. useful storage
   B. dead storage
   C. valley storage
   D. surcharge storage

3. The useful storage is the volume of water stored in the reservoir between________________?

   A. minimum pool level and maximum pool level
   B. minimum pool level and normal pool level
   C. normal pool level and maximum pool level
   D. river bed and minimum pool level

4. The depth of water required to bring the soil moisture content of a given soil upto its field capacity is called_________________?

   A. hygroscopic water
   B. equivalent moisture
   C. soil moisture deficiency
   D. pellicular water

5. With the increase in the quantity of water supplied, the yield of most crops_________________?

   A. increases continuously
   B. decreases continuously
   C. increases upto a certain limit and then becomes constant
   D. increases upto a certain limit and then decreases

6. The value of Sodium Absorption Ratio for high sodium water lies between________________?

   A. 0 to 10
   B. 10 to 18
   C. 18 to 26
   D. 26 to 34

7. The ratio of average values of shear stresses produced on the bed and the banks of a channel due to flowing water is________________?

   A. less than 1
   B. equal to 1
   C. greater than 1
   D. equal to zero

8. For supplying water to rabi crop, kharif crop and sugarcane, the channel is designed for a capacity equal to the greater of the water requirement of_______________?

   A. rabi or kharif
   B. rabi and kharif or sugarcane
   C. rabi and sugarcane or kharif and sugarcane
   D. rabi or kharif or sugarcane

9. When the upstream face of a gravity dam is vertical, then the intensity of water pressure at the water surface and at the base respectively will be_______________?

   A. 0 and wH212
   B. wH2/2and wH2/3
   C. wH and 0
   D. OandwII

   where w is unit weight of water and H is the depth of water

10. The stage of river carrying a discharge of Q m7sec at a point is 10 m and slope of water surface is (1/4000). The discharge of a flood at the same point and same stage of 10 m with a water surface slope of(l/1000) will be________________?

    A. V2 Q m3/sec
    B. 0.5 Q mVsec
    C. 2 Q m3/sec
    D. 4 Q m3/sec