Soil conservation is performed by:_________? A. Cutting trees B. Excessive grazingC. By plantation D. By heavy irrigation

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? A. E B. OC. B D. A

The soil texture refers to the relative proportion of sand,__________ and clay: A. Stone B. Soil C. RockD. Silt

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:___________? 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…

Chemicals, used for controlling the disease of crops, fruits & vegetables is___________ & chemical prepared for controlling insect-pests ——————-: A. Insecticides—HerbicidesB. 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: A. Arsenic & Cadmium B. Mercury & chromium C. Calcium & MagnesiumD. Both A…

Moderately toxic compound:_________? A. Lead B. Fluorine C. NickleD. 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: A. Acid…