______________ consist of particles that are produced by disintegration of pre-existing rocks through the process of weathering:

Related Mcqs:

1. Rocks which are formed by disintegration of pre-existing rocks by weathering are____________________?

   A. Sand stone
   B. Classics
   C. Igneous
   D. Greis

2. Soil-forming minerals occurring in rocks do not contain any water, they undergo ______________ when exposed to humid conditions & break down as in chemical weathering process:

   A. Carbonation
   B. Acidification
   C. Hydration
   D. Dissolution

   Submitted by: Shafiq Rehman

3. Weathering process-physical, chemical, and biological _______________, the rocks and minerals into simpler products which either accumulate in place or are transported to other places where they become soil parent materials?

   A. Disintegrate
   B. Disentigrate
   C. Decompose
   D. Both a & c

   Submitted by: Shafiq Rehman

4. Most common rocks, after exposed to weathering which cover about ______% 0f the earth:

   A. metamorphic rocks
   B. Sedimentary rocks
   C. Igneous rocks
   D. Shales

   Submitted by: Shafiq Rehman

5. Irregular rock masses formed in the pre-existing cracks & crevices are:__________?

   A. Sills
   B. Dikes
   C. Lacoliths
   D. Batholiths

   Submitted by: Mir Mehrbiyar

6. The clay fraction of the soil contains particles less than 0.002 mm. Particles <0.001 mm size:

   A. Soil Silt
   B. Soil colloids
   C. Soil loam
   D. Soil sand

   Submitted by: Shafiq Rehman

7. Weathering is the natural process of__________?

   A. Disintegration
   B. Sedimentation
   C. Decomposition
   D. both A & C

   Submitted by: Shafiq Rehman

8. Weathering is_______________________?

   A. Destructive process
   B. Constructive process
   C. Both a & b
   D. None of the above

9. Biological Weathering involves:

   A. Man and Animals
   B. Higher Plants and Roots
   C. Micro- organisms
   D. All of these

   Submitted by: Shafiq Rehman

10. 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