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

Related Mcqs:

1. 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__________________?

   A. water conveyance efficiency
   B. water application efficiency
   C. water use efficiency
   D. none of the above

2. Which of the following canal structures is used to remove surplus water from an irrigation channel into a natural drain ?

   A. canal fall
   B. canal outlet
   C. canal escape
   D. canal regulator

3. The amount of irrigation water required to meet the evapotranspiration needs of the crop during its full growth is called________________?

   A. effective rainfall
   B. consumptive use
   C. consumptive irrigation requirement
   D. net irrigation requirement

4. 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

5. The normal annual precipitation at stations X, A, B and C are 700 mm, 1000 mm, 900 mm and 800 mm respectively. If the storm precipitation at three station A, B and C were 100 mm, 90 mm and 80 mm respectively, then the storm precipitation for station X will be___________________?

   A. 70mm
   B. 80mm
   C. 90 mm
   D. 105 mm

6. Lining of irrigation channels________________?

   A. increases the waterlogging area
   B. decreases the waterlogging area
   C. does not change the water logging area
   D. none of the above

7. If it rains between 2 P.M. and 3 P.M. and the entire basin area just starts contributing water at 3 P.M. to the outlet, then time of concentration will be_____________________?

   A. 15 minutes
   B. 20 minutes
   C. 30 minutes
   D. 60 minutes

8. The flow of water after spilling over the weir crest in chute spillway and side channel spillway respectively are_________________?

   A. at right angle and parallel to weir crest
   B. parallel and at right angle to weir crest
   C. parallel to weir crest in both
   D. at right angle to weir crest in both

9. 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

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