The air density is maximum:

Related Mcqs:

1. A windbreak with 50% crown density is more effective than one of either 100% or of ______ density:

   A. 15%
   B. 20%
   C. 25%
   D. 30%

2. The best windbreaks approach is 100% crown density in the low-profile shurb, rows, and _____ density in the tall rows:

   A. 50%
   B. 60%
   C. 70%
   D. 80%

3. The air pollution caused by phosphate fertilizer factories is due to:The air pollution caused by phosphate fertilizer factories is due to:

   A. Phosphene
   B. SiF4
   C. Dust
   D. Halogens

4. Air pollution is maximum caused by:

   A. Sewage and industrial effluents
   B. Household detergents and pesticides
   C. Automobile exhausts and chemicals from industry
   D. Sewage and pesticides

5. Division of forest into stands on the basis of density is / are:

   A. The relative closeness of trees is called density
   B. To closeness of crowns boles and roots
   C. Both (a) & (b)
   D. None of these

6. Degree of crown density in a forest stand is:

   A. Closed
   B. Dense
   C. Thin
   D. Open
   E. All of the above

7. Which part of the world has a high density of organism?

   A. Greenlands
   B. Savannahas
   C. Deciduous forests
   D. Tropical rain forest

8. Stocking and density means:

   A. Stocking: Is a qualitative term, which designates the relative occupation of the site by trees
   B. Stand density: A quantitative measure of tree stocking, expressed either relatively as a co-efficient, taking normal numbers, basal area
   C. Both (a) & (b)
   D. None of these

9. Which one has feebly developed root system and numerous air cavities?

   A. Xerophytes
   B. Halophytes
   C. Hydrophytes
   D. Mesophytes

10. The composition of soil air is affected by:

    A. Pore size
    B. Soil organisms
    C. Type of roots
    D. All of these