swelling clay soils, develop cracks due to greater proportion of swelling type clays:

Related Mcqs:

1. 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

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

   A. Stone
   B. Soil
   C. Rock
   D. Silt

   Submitted by: Shafiq Rehman

3. Depending on the percentage of sand, silt, clay, soils are divided into _______ textural classes:

   A. 12
   B. 13
   C. 14
   D. 09

   Submitted by: Shafiq Rehman

4. Soils that have more than 20% organic matter are termed as organic soils. These are also called:________?

   A. Peat soil
   B. solonchalk soil
   C. Muck soil
   D. Both a and c

   Submitted by: Shafiq Rehman

5. Although some acid soils do exist in the northern mountainous regions of Pakistan (Mansehra, Sawat, Dir). Almost all cultivated soils of the country are ________________, with high base saturation and low organic matter content (generally less than 1%)?

   A. Alkaline
   B. Very much acidic
   C. Calcareous
   D. both A & C

   Submitted by: Shafiq Rehman

6. Organic Soils are classified as ____________ and are also known as ____________ soils:

   A. Alfisols. fine & coarse textured
   B. Histosols, peat & muck
   C. Ultisols, Fe & Al rich
   D. None of the above

   Submitted by: Shafiq Rehman

7. Organic matter decomposes rapidly in Pakistani soils because of ____________ conditions, that is why our soils generally have < 1% organic matter:

   A. High temperature
   B. Alkaline
   C. Both a & b
   D. None of a & b

   Submitted by: Shafiq Rehman

8. The forest soils have lower bulk density than agricultural soils because of their ______ content.

   A. High organic matter
   B. Low organic matter
   C. Both a & b
   D. None of these

   Submitted by: Adnan

9. Accumulation of Al and Fe oxides and clays coming from the upper profile layers:

   A. Zone of eluviation
   B. Zone of Illuviation
   C. Zone of evaluation
   D. None of the above

   Submitted by: Shafiq Rehman

10. Soil order characterized by excess of weathering with dominant iron and aluminium oxide clays, common in tropics is_________?

    A. Alfisols
    B. Mollisols
    C. Entisols
    D. Oxisols

    Submitted by: Shafiq Rehman