46) The duty of a crop is 432 hectares per cumec when the base period of the crop is 100 days. The delta for the crop will be

• (a) 100 cm
• (b) 200 cm
• (c) 432 cm
• (d) 864 cm

47) The average delta of rice crop is nearly

• (a) 30 cm
• (b) 60 cm
• (c) 120 cm
• (d) 150 cm

48) The average duty for sugar-cane in hectares/cumec is

• (a) 200
• (b) 400
• (c) 600
• (d) 800

49) The optimum depth of kor watering is 19 cm for

• (a) wheat
• (b) sugar-cane
• (c) rice
• (d) cotton

50) A field of 500 hectares is to be irrigated for a particular crop having 100 days base period. The total depth of water required by the crop is 100 cm. duty of the water (in hectares per cubic metre per second) is

• (a) 8.64
• (b) 57.87
• (c) 86.4
• (d) 864