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

Related Mcqs:

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

   A. Soil Silt
   B. Soil colloids
   C. Soil loam
   D. Soil sand

   Submitted by: Shafiq Rehman

2. 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

3. 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

4. Conversion of inorganic P to organic P is known as:_________?

   A. Mineralization
   B. Immobilization
   C. Solubilization
   D. both A & C

   Submitted by: Mir Mehrbiyar

5. Organisms satisfying their carbon requirement as Co2 from atmosphere and energy requirement from oxidation of simple inorganic compound are called as_________?

   A. Chemoautotroph
   B. Photoautotroph
   C. Saprophyte
   D. None of these

   Submitted by: Shafiq Rehman

6. Soils are also contaminated by a number of inorganic compounds which are also high toxic to human & other animals & are extremely poisonous may include:

   A. Arsenic & Cadmium
   B. Mercury & chromium
   C. Calcium & Magnesium
   D. Both A & B

   Submitted by: Shafiq Rehman

7. Size of clay particle is___________________?

   A. 0.02mm
   B. 0.2mm
   C. 0.002mm
   D. 2mm

8. The kaolininte is a layer silicate clay mineral, it is 1:1 type of mineral with___________________?

   A. 3-15 meq/100g CEC
   B. 40 meq/100g CEC
   C. 50 meq/100g CEC
   D. None of the above

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

   A. Alfisols
   B. Ultisols
   C. Vertisols
   D. None of the above

   Submitted by: Shafiq Rehman

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

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

    Submitted by: Shafiq Rehman