Process of mixing of soils is known as_________?

Related Mcqs:

1. 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

2. 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

3. 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

4. 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

5. 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

6. Process of mixing soil by fauna and flora is called__________________?

   A. Lessivage
   B. Pedoturbation
   C. Leaching
   D. Enrichment

7. According to a latest research, Pakistan is predominantly a dryland country; 80% of its land area is arid and semi arid, 12% sub-humid and 8% under humid climate. Thus , soils of arid & semi-arid regions are vulnerable to a wide range of degradation process. As the case in arid and semi-arid climates elsewhere in south-central/southern Asia and Sub-Saharan Africa; _________________ are among the major causes of soil degradation and desertification?

   A. Drought stress
   B. Accelerated erosion & salinization
   C. Depletion of soil fertility and SOM
   D. All of the above

   Submitted by: Shafiq Rehman

8. Loss of nitrogen in the form of NH3 in alkaline medium is known as_________?

   A. Denitrification
   B. Leaching
   C. Volatilization
   D. None of these

   Submitted by: Shafiq Rehman

9. In cotton, zn deficiency is known as_________?

   A. Fern leaf
   B. Mottle leaf
   C. Little leaf
   D. None of these

   Submitted by: Shafiq Rehman

10. 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