The clay fraction of the soil contains particles less than 0.002 mm. Particles <0.001 mm size:

Related Mcqs:

1. __________ particles range in diameter between 0.02 to 0.002 mm:

   A. Sand B. Silt C. Clay D. None of the above Submitted by: Shafiq Rehman...

2. 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...

3. An intrazonal group of dark calcareous soils high in clay and having mainly montmorillonitic type clay are called as:________?

   A. Regur B. Ragour C. Montmorillosol D. Regosol Submitted by: Shafiq Rehman...

4. 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...

5. Inorganic constituents vary in size from fine clay particles _________ mm to large _________ mm gravel and rock:

   A. < 0.002 mm- >2 mm B. 0.5 mm – 1.0 mm C. 0.02 mm- 0.2 mm D. None of the above Submitted by: Shafiq Rehman...

6. The soil texture refers to the relative proportion of sand,__________ and clay:

   A. Stone B. Soil C. Rock D. Silt Submitted by: Shafiq Rehman...

7. ___________ , considered a perfect soil, is a mixture of silt, clay and sand:

   A. Clay B. Sandy loam C. Loamy sand D. Loam Submitted by: Shafiq Rehman...

8. Soil additive which stabilizes the soil, improves resistance to erosion, increases to permeability to air & water, improves texture, eases cultivation or otherwise improves soil quality:

   A. Soil amendment B. Soil conditioner C. Both a & b D. None of the above Submitted by: Shafiq Rehman...

9. Soil particles having diameter greater than 2 mm are called___________________?

   A. Clay B. Silt C. Sand D. Gravel...

10. Soil particles as individuals such as sand and do not form aggregates. These are usually found in parent material or C horizon is:_________?

    A. Massive B. Single-grained C. Aggregated D. All of the above Submitted by: Shafiq Rehman...