A. 259,710 km2
B. 269,810 km2
C. 278,910 km2
D. None of these
Soil Science
Soil pores created by the animal such as earthworm and plant root are called………?
A. Biopores
B. Diameter
C. Mesopores
D. Microspores
Which of the following crops is most tolerant to salty soils?
A. Corn
B. Rice
C. Carrot
D. Cotton
Father of soil conservation and Father of Pedology respectively?
A. Winogradsky & R. Morphy
B. Winogradsky & Dokuchaev
C. Bennett & Dokuchaev
D. both A & B
The dominance of acidity creates toxicity?
A. Mo
B. Al
C. Zn
D. Mg
Silica tetrahedron is……….?
A. Six sided arrangement
B. Eight sided arrangement
C. Four sided arrangement
D. both A & B
Nitrogen fixation is accomplished by:………?
A. Fungi
B. Bacteria from atmosphere
C. Plants
D. None of these
Which one of the following clay mineral has the highest CEC?
A. Kaolinite
B. Montmorillonite
C. Vermiculite
D. Illite
“Soil” word derive from which language?
A. English
B. Greek
C. Latin
D. None of the above
Fossils are found in……….type of rocks:
A. Sedimentary rocks
B. Metamorphic rocks
C. Aqueous rocks
D. both A & C