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

Related Mcqs:

1. 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

2. Source of negative charges on silicate clays is/ are________?

   A. Exposed crystal edges
   B. Isomorphous substitution
   C. Anion exchange
   D. All of these

   Submitted by: Shafiq Rehman

3. 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

4. The process of accumulation of excess quantity of nutrients in water causing O2 deficiency is known as_____________________?

   A. Eutrophication
   B. Nitrification
   C. Denitrification
   D. Sedimentation

5. Accumulation of soluble salts root zone is known as____________________?

   A. Desodication
   B. Sodication
   C. Degradation
   D. Salininzation

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. Deep percolation from a soil profile is generally measured by a device known as_____________________?

   A. Hydrometer
   B. Lysimeter
   C. Thermometer
   D. Tensiometer

8. Some times, AB/EB/BA/BE horizons in soil profile are present which are called__________?

   A. Master horizons
   B. Transition horizons
   C. Little horizons
   D. All of the above

   Submitted by: Shafiq Rehman

9. Pedogenic processes bring about changes in the parent materials in the form of _____________________, within the soil body (soil profile)?

   A. Additions, losses
   B. Transfers and transformations
   C. both A and B
   D. None of the above

   Submitted by: Shafiq Rehman

10. Accumulation of soluble salts in soil________?

    A. Alkalization
    B. Desalinization
    C. Salinization
    D. All off these

    Submitted by: Hakeem Taj Shapuki