A. Water
B. Petrol
C. Soil
D. Gas
Soil Science
Product of microorganism that appears to chelate calcium is called…………………?
A. Pyruive acid
B. 2-ketoghconic acid
C. Carbon dioxide
D. Phospheric acid
Which is passive factor of weathering ?
A. Climate
B. Parent material
C. Organisms
D. Temperature
Mollic refers to………………..?
A. B-horizon
B. C-horizon
C. U-horizon
D. Surface horizon
Kaolinite can be identified by………………….?
A. Spectrophotometer
B. Boiling
C. X-ray diffraction
D. Breaking
Shrinking and swelling is property of………………?
A. Clay
B. Silk
C. Water
D. Smecitie
Size of clay particle is……………….?
A. 0.02mm
B. 0.2mm
C. 0.002mm
D. 2mm
Soil water can be determined by…………………?
A. Mass water content
B. Macro pores
C. Both a & b
D. None of the above
Which one of the following are macro nutrients………………?
A. N,P,K
B. C,H,O
C. Ca,Mg,S
D. All the above
An ion or molecule in the coordination sphere central ion is called………………?
A. Complexion
B. Ligand
C. Chelate
D. Potential