1. The field capacity of a soil depends upon ?

capillary tension in soil

porosity of soil

either (a) or (b)

both (a) and (b)

Answer: both (a) and (b)

Explanation:


2. The optimum depth of kor watering for wheat in the plains of north india is ?

13.5 cm

16.5 cm

19 cm

21 cm

Answer: 13.5 cm

Explanation:


3. Consumptive use of water by a crop is equal to ?

the depth of water consumed by evaporation

the depth of water consumed by transpiration

the depth of water consumed by evaporation and transpiration during crop growth, inch water consumed by accompanying weed growth

none of the above

Answer: the depth of water consumed by evaporation and transpiration during crop growth, inch water consumed by accompanying weed growth

Explanation:


4. The hydrology is a science which deals with the ?

occurrence of water on the earth

distribution of water on the earth

movement of water on the earth

all of these

Answer: all of these

Explanation:


5. The total depth of water required by a crop during the entire period the crop is in the field known as ?

delta

duty

base period

crop period

Answer: delta

Explanation:


6. The water shed canal is also called ?

side slope canal

contour canal

ridge canal

all of these

Answer: ridge canal

Explanation:


7. A spoil bank is formed when the ?

canal has steep bed slope

canal section is too large

volume of excavation is in excess of the embankment filling

canal alignment is meandrous

Answer: volume of excavation is in excess of the embankment filling

Explanation:


8. The estimation of flood can be made ?

by physical indication of past floods

by flood discharge formula

by unit hydrograph

all of these

Answer: all of these

Explanation:


9. The irrigation water is said to be unsatisfactory, if it contains ?

chemicals toxic to plants or to persons using plants as food

chemicals which react with the soil to produce unsatisfactory moisture characteristics

bacteria injurious to persons or animals eating plants irrigated with water

all of the above

Answer: all of the above

Explanation:


10. The hydrology helps in ?

predicting maximum discharge

deciding capacity of reservoir

fore casting flood

all of these

Answer: all of these

Explanation: