A. Pans
B. Peds
C. Clods
D. None of these
Related Mcqs:
- Removal of top soil by soil erosion result in the loss of soil:
A. Nitrites
B. Nitrates
C. Nitrogen
D. Nitric and nitrous acids - 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 - 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% - 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 - 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 - The amount of soil lost to sea each year due to rainfall is around:
A. 3,000 million tons
B. 3,000,000 million tons
C. 3,00,00,000 million tons
D. 3,00,000 billion tons - Over-all mineral level of soil recedes due to:
A. Leaching only
B. Utilization by plants
C. Both (a) & (b)
D. Chemical reactions - When DDT was applied in an orchard as a pesticide, the fruit production decreased. This happened because:
A. DDT is a growth retardant
B. DDT disturbed hormonal balance essential for fruit setting
C. DDT killed the pollinating insects along with the pests
D. DDT inhibited flowering - The acidity of soil is primarily due to
A. H+
B. AI+3
C. Both (a) & (b)
D. H+ and Zn+2 - Positive pollution of soil is due to:
A. Excess use of fertilizers
B. Addition of wastes on soil
C. Reduction in soil productivity
D. All of these
The correct answer to the question: "The soil permeability can be decreased due to blockers called:" is "Pans ".
