Each layer of phyllosilicates is composed of two types of sheets:

Related Mcqs:

1. Water is the major constituent of all living creatures. Biomass of plants is composed of ________% water:

   A. 65 – 75%
   B. 72 – 62%
   C. 85 – 95%
   D. 75% – 80%

   Submitted by: Shafiq Rehman

2. The kaolininte is a layer silicate clay mineral, it is 1:1 type of mineral with___________________?

   A. 3-15 meq/100g CEC
   B. 40 meq/100g CEC
   C. 50 meq/100g CEC
   D. None of the above

3. The atmospheric layer lies closest to the earth surface is known as___________________?

   A. Mesosphere
   B. Thermosphere
   C. Troposphere
   D. Stratosphere

4. The process of deposition of soil materials in the lower layer is termed as:_________?

   A. Illuviation
   B. Eluviation
   C. Podzolization
   D. Laterization

   Submitted by: Shafiq Rehman

5. _________ erosion is the removal of a thin layer of soil by water acting over the whole surface. This type of erosion damaged very fertile lands located on slopes, some of which have been eroded to a depth of about 15 cm.

   A. Rain splash rill erosion
   B. Stream bank erosion
   C. Sheet erosion
   D. Gully erosion

   Submitted by: Shafiq Rehman

6. The process by which nutrients chemicals or contaminants are dissolved and carried away by water, or are moved into a lower layer of soil:

   A. Infiltration
   B. Percolation
   C. Leaching
   D. Seeping

   Submitted by: Shafiq Rehman

7. following are types of weathering:

   A. Geo chemical weathering
   B. Judo weathering
   C. Pedo chemical weathering
   D. both a and c

   Submitted by: Shafiq Rehman

8. Following are types if erosion:

   A. Rain splash & sheet erosion
   B. Rill & Gully erosion
   C. Normal (geological) erosion & Accelerated erosion
   D. All of these

   Submitted by: Shafiq Rehman

9. The relative abundance of three types of rocks ( igneous-metamorphic- sedimentary) in the earth’s crust is_________?

   A. 12.5 % -12.5 % – 75%
   B. 64.7 % – 27.4 % – 7.9 %
   C. none of A & B
   D. 7.9% – 27.7 % – 64.4

   Submitted by: Shafiq Rehman

10. The following types of check dams have been tried in Pakistan:

    A. Brushwood check dams
    B. Loose stone or wire-bound check dams
    C. Cement & stone check dams
    D. All of the above

    Submitted by: Shafiq Rehman