Related Questions

The drain which is provided parallel to roadway to intercept and divert the water from hill slopes is known as
A Sloping drain
B Catch-water drain
C Side drain
D Cross drain
A man can walk uphill at the rate of 2.5 hm/hr and downhill at the rate of 3.25 km/hr. If the total time required walking a certain distance up the hill and return to the starting position is 4 hr 36 min, what is the distance he walked up the hill?
A 3.5 km
B 4.5 km
C 5.5 km
D 6.5 km
Razia spent 3 hours climbing 6 miles up a hill. She spent 2 hours coming down the hill in a different path which had a length of 8 miles. For Razia's completed climb up and down the hil , what was her average speed, in miles per hour?
A 2.0
B 2.5
C 2.8
D 3.0
Side slopes generally kept for canals in loam soil, are:
A 1 : 1 in cutting and $$1\frac{1}{2}$$ : 1 in filling
B $$1\frac{1}{2}$$ : 1 in cutting and 2 : 1 in filling
C Neither (A) nor (B)
D Both (A) and (B)
Soil erosion can be prevented by
A Removal of vegetation
B Overgrazing
C Afforestation
D Increasing bird population
Soil erosion can be prevented by ________
A Allowing herbivorous animals to graze freely
B Growing plants on a large scale to form soil cover
C Making the land sloppy
D Adding chemicals to increase cohesion
Soil erosion in desert area can be prevented
A By strip ploughing
B By using manure
C By forestation
D By shifting cultivation
Although pocket gophers 'damage' crops, their 'tunneling' aerates the soil, which helps 'conserve' ground water and 'preventing' erosion.
A damage
B tunneline
C conserve
D preventing
Which one is not the driver of soil erosion?
A Water
B wind
C surface water
D rainfall
Which of the following is not a cause of soil erosion?
A Drainage
B Deforestation
C Weathering
D Grazing

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