The processes involved in the chemical weathering are:

Related Mcqs:

1. The biological weathering occurs due to the action of:

   A. Acids
   B. Alkalies
   C. Oxygen
   D. Carbon dioxide

2. The biological weathering commonly brought about by:

   A. Algae
   B. Bacteria
   C. Fungi
   D. Lichens

3. In the phosphorus cycle, weathering makes phosphate available first to:

   A. Decomposers
   B. Consumers
   C. Producers
   D. All the above

4. The processes involving the transformation of carbon compounds on earth include:

   A. Only the plants
   B. Both biological and non-biological processes
   C. Only the living organisms
   D. Only the animals

5. The chemical produced by the host plant to protect themselves against fungal infection is:

   A. Toxin
   B. Hormone
   C. Phytotoxin
   D. Phytoalexin

6. By chemical composition the humus has maximum percentage of:

   A. Nitrogen
   B. Oxygen
   C. Carbon
   D. Hydrogen

7. The scope of forest management can be summed up by listing various activities involved as:

   A. Control of growing stock, its structure and composition
   B. Distribution and marketing of forest produce
   C. Administration of the forest property
   D. All of the above

8. The biotic factor not involved in the succession:

   A. Human beings
   B. Non-pathogenic microbes
   C. Pathogenic microbes
   D. Grazing animals

9. Many forested regions of today were once barren rock areas. Mot likely this change involved the following sequence of stages:

   A. Lichens-mosses-annual herbs-wood shrubs
   B. Annual herb-weedy shrubs-lichens-mosses
   C. Woody shrubs-mosses-lichens-annual herbs
   D. Mosses-annual herbs-woody shrubs-lichens

10. The back and forth movements of chemical elements, between organisms and environment along characteristic circular paths and known as:

    A. Biochemical cycles
    B. Ecological cycles
    C. Chemical cycles
    D. None of these