About 40% of the total area of Pakistan is affected by wind erosion. this includes:_________?

Related Mcqs:

1. According to one estimate, wind and water erosion over ______ % of the Pakistan’s total area?

   A. 46%
   B. 36%
   C. 76%
   D. None of the above

   Submitted by: Shafiq Rehman

2. In Balochistan, deserts also exists in _________, which supoorts wind erosion excluding rocky mountains:

   A. Desert of Kharan
   B. Noshki
   C. Both A & B
   D. Qilla SaifUllah

   Submitted by: Shafiq Rehman

3. Erosion permitting and erosion resisting crops grow alternatively at right angle to the slope of the land is called as:_________?

   A. Linear planting
   B. Strip planting
   C. Cover planting
   D. All of the above

   Submitted by: Shafiq Rehman

4. _________ erosion is the removal of a thin layer of soil by water acting over the whole surface. This type of erosion damaged very fertile lands located on slopes, some of which have been eroded to a depth of about 15 cm.

   A. Rain splash rill erosion
   B. Stream bank erosion
   C. Sheet erosion
   D. Gully erosion

   Submitted by: Shafiq Rehman

5. The first mechanism to start in the wind erosion is_________?

   A. Creep
   B. Saltation
   C. Siltation
   D. None of these

   Submitted by: Shafiq Rehman

6. Soil erosion is __________ of soil from one place ti another place by natural agencies (wind & water):

   A. Detachement of soil
   B. Transportation
   C. both A & B
   D. None of these

   Submitted by: Shafiq Rehman

7. Total salt affected soils of Pakistan are____________________?

   A. 6.3 m ha
   B. 5.0 m ha
   C. 12.3 m ha
   D. 10.5 m ha

8. Soil erosion Occurs mainly in:_________?

   A. Inceptisols, Mollisols
   B. Alfisols, Entisols
   C. Both a & b
   D. None of the above

   Submitted by: Shafiq Rehman

9. In Pakistan, approximately __________ mha of irrigated land is affected by salinization:

   A. 12.6 mha
   B. 5.7 mha
   C. 8.2 mha
   D. None of the above

   Submitted by: Shafiq Rehman

10. Almost one third of the land area through out the world is affected by land degradation. Pakistan’s agriculture sector though facilitates employment to >65% but is facing challenges from:

    A. Erosion
    B. Salinity
    C. Waterlogging
    D. All of the above

    Submitted by: Shafiq-ur-Rehman