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...