Volcanic soils:

Related Mcqs:

1. 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

2. 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

3. 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

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. Common soils found in Pakistan are___________________?

   A. Arid soils
   B. Inceptisols
   C. Entisols
   D. All the above

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. _________is probably the most important growth limiting factor in acid soils especially those having pH below 5.0-5.5?

   A. Nitrogen
   B. Potassium
   C. Aluminium
   D. Calcium

   Submitted by: Shafiq Rehman

9. 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

10. Which of the following crops is most tolerant to salty soils?

    A. Corn
    B. Rice
    C. Carrot
    D. Cotton

    Submitted by: Mir Mehrbiyar