Surface removal of ice or snow from a glacier or snowfield by melting, sublimation, and/ or calving:

Related Mcqs:

1. The wearing away of the land surface by wind, water, ice or other geological agents is called____________________?

   A. Seepage
   B. Soil erosion
   C. Soil contamination
   D. All the above

2. _________ 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

3. The removal of excess water from the ground surface is called:________?

   A. Sub-surface drainage
   B. Surface operations
   C. Drainage
   D. All of the above

   Submitted by: Shafiq Rehman

4. Clay and humus particles are referred to as colloids and are less than 0.002mm. Due to their small size, colloids have ________________ surface area which provides surface for adsorption, catalysis, precipitation and microbial colonization:

   A. Extremely low
   B. Extremely high
   C. Very little
   D. None of these

   Submitted by: Shafiq Rehman

5. The atmospheric layer lies closest to the earth surface is known as___________________?

   A. Mesosphere
   B. Thermosphere
   C. Troposphere
   D. Stratosphere

6. The immobilization and accumulation of the eluviated constituents at some depth beneath the soil surface:________?

   A. Iluviation
   B. Eluviation
   C. Illuviation
   D. Melanization

   Submitted by: Shafiq Rehman

7. Small rivulets or finger like channels formed on the surface of earth by action of water, these channels are of small depth & can be leveled by tillage operations is:

   A. Gully erosion
   B. Sheet erosio.
   C. Stream bank erosion
   D. None of these

   Submitted by: Shafiq Rehman

8. Which chemical used to prevent evaporation from surface of water in water bodies?

   A. Cetyle alcohol
   B. Methyle alcohol
   C. both A and B
   D. None of these

   Submitted by: Shafiq Rehman

9. Any tillage and planting system that maintains at least 30% of the soil surface covered by residue after planting for the purpose of reducing soil erosion by water:

   A. Deep Tillage
   B. Conservation Tillage
   C. Both a & b
   D. None of these

   Submitted by: Shafiq Rehman

10. Any material such as straw, sawdust, leaves, plastic films, & loose soil that is spread upon the surface of the soil to protect the soil & plant roots from the effects of raindrops, soil crusting, freezing or evaporation:

    A. Mull
    B. Mulch
    C. Mycorrhizae
    D. Muck

    Submitted by: Shafiq Rehman