Soil conservation is performed by:_________?
A. Cutting trees
B. Excessive grazing
C. By plantation
D. By heavy irrigation
Soil Science
One of the following is not a form of water erosion:
One of the following is not a form of water erosion:
A. Saltation
B. Rainsplash erosion
C. Sheet erosion
D. Rill erosion
“Wash-in” takes place in which horizon?
“Wash-in” takes place in which horizon?
A. E
B. O
C. B
D. A
The soil texture refers to the relative proportion of sand,__________ and clay:
The soil texture refers to the relative proportion of sand,__________ and clay:
A. Stone
B. Soil
C. Rock
D. Silt
The capacity of a soil to function on sustained basis promoting plant and animal health:
The capacity of a soil to function on sustained basis promoting plant and animal health:
A. Soil Quality
B. Soil Pollution
C. Soil Salinity
D. None of these
Effects of soil pollution may also include:___________?
Effects of soil pollution may also include:___________?
A. Pollution runs-off into rivers & kills the fish, plant & other aquatic life
B. Crops & fodder grown on polluted soil may pass the pollutants on to the consumers
C. Soil structure is damaged or polluted soil may no longer grow crops & fodder
D. All of the above
Chemicals, used for controlling the disease of crops, fruits & vegetables is___________ & chemical prepared for controlling insect-pests ——————-:
Chemicals, used for controlling the disease of crops, fruits & vegetables is___________ & chemical prepared for controlling insect-pests ——————-:
A. Insecticides—Herbicides
B. Fungicides—Insecticides
C. Weedicides—insecticides
D. None of the above
Soils are also contaminated by a number of inorganic compounds which are also high toxic to human & other animals & are extremely poisonous may include:
Soils are also contaminated by a number of inorganic compounds which are also high toxic to human & other animals & are extremely poisonous may include:
A. Arsenic & Cadmium
B. Mercury & chromium
C. Calcium & Magnesium
D. Both A & B
Moderately toxic compound:_________?
Moderately toxic compound:_________?
A. Lead
B. Fluorine
C. Nickle
D. All of the above
Nitrogen & sulphur dioxide liberate from motor vehicles & industries. Nitrogen & Sulphur gases dissolve in the water vapour of atmosphere & form nitric & sulphuric acid. This rain water falls on soil as__________ & contaminates soil also:
Nitrogen & sulphur dioxide liberate from motor vehicles & industries. Nitrogen & Sulphur gases dissolve in the water vapour of atmosphere & form nitric & sulphuric acid. This rain water falls on soil as__________ & contaminates soil also:
A. Acid rain
B. Neutral rain
C. Both A & B
D. None of the above