To protect the face of embankment against the attack of wave wash with stone boulders is called _________________?
A. Pitching
B. Armouring
C. Revetment
D. All are correct
Ground water moving down wards in the un-saturated ground above the water table is called___________________?
Ground water moving down wards in the un-saturated ground above the water table is called___________________?
A. Hygroscopic water
B. Capillary water
C. Gravity water
D. All are correct
The discharge of a well per unit draw down usually expressed as gallons or liters per minute is called ____________________?
The discharge of a well per unit draw down usually expressed as gallons or liters per minute is called ____________________?
A. Discharge
B. Specific volume
C. Specific capacity
D. All are correct
The property of saturated soil mass which transmits appreciable quantities . water is called___________________?
The property of saturated soil mass which transmits appreciable quantities . water is called___________________?
A. Porosity
B. Transmissibility
C. Permeability
D. Discharge
The property of soil which indicates the volume of water stored in the formation is called ___________________?
The property of soil which indicates the volume of water stored in the formation is called ___________________?
A. Specific yield
B. Porosity
C. Field capacity
D. Specific retention
_________% of total global water is fresh and its major portion is obtained from Rains ?
_________% of total global water is fresh and its major portion is obtained from Rains ?
A. 2%
B. 2.5%
C. 3%
D. 3.2%
Estimated quantity of global water is __________which covers about 70% of earth?
Estimated quantity of global water is __________which covers about 70% of earth?
A. 1.30x109km3
B. 1.32x109km3
C. 1.33x109km3
D. 1.35x109km3
Wilting point is that limit after that the crop starts feeding up and no water is available for plant, this point occurs after _________________?
Wilting point is that limit after that the crop starts feeding up and no water is available for plant, this point occurs after _________________?
A. 30% water available
B. 25% water available
C. 20% water available
D. All are correct
Water available above the top of root zone of plants is about 15% of soil moisture contents, is mostly not available to plants celled_________________?
Water available above the top of root zone of plants is about 15% of soil moisture contents, is mostly not available to plants celled_________________?
A. Capillary water
B. Irrigation water
C. Effective water
D. Hygroscopic water
Water application efficiency increases if the plot to be irrigated is__________________?
Water application efficiency increases if the plot to be irrigated is__________________?
A. Circular
B. Square
C. Rectangle
D. All are correct