Soil is a variable mixture of Major components:

Related Mcqs:

1. Any material such as straw, sawdust, leaves, plastic films, & loose soil that is spread upon the surface of the soil to protect the soil & plant roots from the effects of raindrops, soil crusting, freezing or evaporation:

   A. Mull
   B. Mulch
   C. Mycorrhizae
   D. Muck

   Submitted by: Shafiq Rehman

2. Soil additive which stabilizes the soil, improves resistance to erosion, increases to permeability to air & water, improves texture, eases cultivation or otherwise improves soil quality:

   A. Soil amendment
   B. Soil conditioner
   C. Both a & b
   D. None of the above

   Submitted by: Shafiq Rehman

3. The major soil fertility problems in Pakistani soils deficiencies of N, P and Zn. Deficiencies K, Fe, and B also occur in specific crop genotypes or soil types, while deficiencies of S, Cu, and Mn are negligible. however, the common nutrient deficiencies are_________________: and some micronutrients including Mo?

   A. N, P, K
   B. Ca, Mg, S
   C. both A & B
   D. The above statement is wrong

   Submitted by: Shafiq Rehman

4. Soil is a mixture of__________?

   A. Minerals And organic matter
   B. Water
   C. Air
   D. All of the above

   Submitted by: Shafiq Rehman

5. ___________ , considered a perfect soil, is a mixture of silt, clay and sand:

   A. Clay
   B. Sandy loam
   C. Loamy sand
   D. Loam

   Submitted by: Shafiq Rehman

6. A soil is classified as sodic soil when______________________?

   A. EC is 8.5
   C. SAR is >13
   D. All the above

7. Addition of sodium hexametaphosphate in soil for determination of soil texture causes__________________?

   A. Agregation of soil particles
   B. Cementing of soil particles
   C. Dispersion of soil particles
   D. All the above

8. Soil erosion is __________ of soil from one place ti another place by natural agencies (wind & water):

   A. Detachement of soil
   B. Transportation
   C. both A & B
   D. None of these

   Submitted by: Shafiq Rehman

9. The soil samples are dried at _______________, for gravimetric soil analysis?

   A. 110 ⁰C
   B. 120 ⁰C
   C. both A and B
   D. 105 ⁰C

   Submitted by: Shafiq Rehman

10. The availability of essential nutrients from soil to the plants is controlled by the ________ properties of soil:

    A. Physical
    B. chemical
    C. Biological
    D. both A & B

    Submitted by: Shafiq Rehman