Soil Water Conservation Engineering Mid - I, September - 2014

1.Percentage loss of soil by saltation in wind erosion is
  • 30-38%
  • 38-50%
  • 50-72%
  • more than 72%
Answer: C
2.The minimum length of shelter belt is how many times of its height
  • 32
  • 42
  • 52
  • 24
Answer: D
3.Spacing between bunds is expressed in terms of
  • HI
  • VI
  • Both a and b
  • None of above
Answer: C
4.Central Soil and Water Conservation and Research and Training Institute is located in
  • Ludhiana
  • Dehradun
  • Hyderabad
  • Bopal
Answer: B
5.The cross sectional area of graded bund should not be less than
  • 1 m2
  • 2.25 m2
  • 5 m2
  • 4 m2
Answer: A
6.Application of any plant material or any other material to cover the top soil surface is
  • Crop rotation
  • Manuring
  • Mulching
  • Strip cropping
Answer: C
7.Initial abstraction (Ia) of the black soil with AMC II & III as suggested by MOA, GOI
  • 0.1S
  • 0.2S
  • 0.3S
  • 0.4S
Answer: A
8.In field, the soil loss measurement can be done by using
  • Runoff plots
  • Cook’s method
  • Rational formula
  • all above
Answer: A
9.The maximum number of rows in shelterbelt can be
  • 2
  • 1
  • more than 2
  • 5
Answer: C
10.The unit of erosion intensity is
  • kg/ha
  • m/m2
  • m3/ha
  • all above
Answer: D
11.Average soil loss in India per year ___________ t/ha
Answer: 16.35 t/ha
12.Rill erosion is the advance stage of ___________ erosion.
Answer: Sheet erosion
13.Vegetation begins to grow in a gully channel and further erosion ceases. This stage of gully is
called as _______________
Answer: Healing stage
14.Contour bunding is not technically feasible on the land slopes greater than ________ percent
Answer: 6%
15.Quantity of soil moved is directly proportional to ____________ of size of soil particle.
Answer: Square root
16.The advance stage of ______________erosion leads to formation of ravines near the river
system
Answer: Gully
17.Major portion of soil is carried by wind is moved in series of bounces or jumps called _________
Answer: Saltation
18.The slope range of Class II lands is _________ percent
Answer: 1-3%
19.Erosion is widely classified in two classes, they are geologic and __________ erosion.
Answer: Accelerated
20.Graded bunds are adapted where the annual rainfall is exceeds ________mm.
Answer: 800 mm