Micas have isomorphous substitution:____________?

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. Potassium (K) fixation capacity is maximum in:____________?

   A. Vermiculite
   B. Illite
   C. Montmorillonitic
   D. Amorphous clay

   Submitted by: Shafiq Rehman

3. Which of the following statement is wrong regarding, Soil ____________?

   A. Regulates water supply & recycles waste materials
   B. Medium for plant growth & Habitat for organisms
   C. Engineering medium & modifies the atmosphere
   D. Dirt which is threat to all living life & crop production 

   Submitted by: Shafiq Rehman

4. The internal & external surfaces of soil colloids are positively and or negatively charged. Mostly ____________ is dominant:

   A. Positive
   B. Negative
   C. Zero
   D. All of the above

   Submitted by: Shafiq Rehman

5. 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

6. Preferable form of nitrogen for rice under submerged soil conditions is ____________?

   A. NH4
   B. NO3
   C. NO2
   D. All of these

   Submitted by: Muhammad Rehan

7. In agriculture ” Khasra Girdawari” is: ____________?

   A. Crop inspection register name
   B. Map of land
   C. Title of land owner
   D. Ownership authority name

   Submitted by: Qandil Shafiq

8. The deficient macronutrient in the sodic soils is:_______?

   A. Mg
   B. Ca
   C. Mo
   D. Cu

   Submitted by: Shafiq Rehman

9. Phosphorus deficiency is widespread in most (_____%) 0f the soils of Pakistan.

   A. 54%
   B. 90%
   C. 68%
   D. 32%

   Submitted by: Shafiq Rehman

10. Water-erosion can be reduced / controlled by:___________?

    A. Provision of surface-cover that intercepts the rain before hitting the soil.
    B. Reducing the amount of runoff by promoting infiltration.
    C. Both a & b
    D. None of the above

    Submitted by: Shafiq Rehman