The abbreviation CEC of soil broadly refers to:

Related Mcqs:

1. Removal of top soil by soil erosion result in the loss of soil:

   A. Nitrites
   B. Nitrates
   C. Nitrogen
   D. Nitric and nitrous acids

2. Those chemicals which are produced by plants and affect other plants are broadly called:

   A. Depresants
   B. Allomones
   C. Allelochemics
   D. Kairomones

3. The abbreviation MPN stand for:

   A. Most probable number
   B. Millions per night
   C. Millennium of probable number
   D. None of these

4. The term sub-soil generally refers to:

   A. Horizon-C
   B. Horizon-A
   C. Horizon-R
   D. Horizon-B

5. In water logged soil plants cannot grow properly because the soil is:

   A. Physiologically wet
   B. Physiologically dry
   C. Physically dry
   D. None of the above

6. When a plant first begins to wilts permanently in a pot, its 54.5 gms of soil has 4.5 gms of water. The PWP of this soil is:

   A. 4.50%
   B. 9%
   C. 8.25%
   D. 16.50%

7. The ration of volume of pores in the soil to the total soil volume is referred to as:

   A. Pore frequency ratio
   B. Pore density ration
   C. Pore abundance ratio
   D. Pore space ratio

8. When a soil has been thoroughly wetted and then allowed to drain until capillary movement of the water has stopped, the water content of the soil will give an estimate of it’s:

   A. Gravitational water
   B. Capillary water
   C. Field capacity
   D. Storage capacity

9. Albido value refers to:

   A. Turbidity of solar radiations
   B. Percentage of solar absorption
   C. Percentage of reflected light by a surface
   D. Amount of light absorbed by forests

10. The term ‘chesard’ refers to:

    A. Gravitational water
    B. Capillary water
    C. Run off water
    D. Water vapour