Addition of sodium hexametaphosphate in soil for determination of soil texture causes ______?
A. Agregation of soil particles
B. Cementing of soil particles
C. Dispersion of soil particles
D. All the above
The process of accumulation of excess quantity of nutrients in water causing O2 deficiency is known as ________?
A. Eutrophication
B. Nitrification
C. Denitrification
D. Sedimentation
Chromium (Cr) is a _____?
A. Macro element
B. Secondary element
C. Heavy metal
D. Free element
Percentage of N in Ammonium sulphate fertilizer is ______?
A. 23
B. 35
C. 45
D. 21
The available form of sulphur for plant is _______?
A. S2
B. SO-2
C. SO3
D. SO2
The plant in which CO2 fixation is solely via the Calvin cycle is _____?
A. C
B. CAB
C. C
D. CAM
Gravimetric water is present in _____?
A. Microspores
B. Macrospores
C. Mesopores
D. Nanopores
Sugar cane is _____?
A. C3 plant
B. C4 plant
C. C2 plant
D. None of the above
The lower limit of available water is called _______?
A. Field capacity
B. Wilting point
C. Available water
D. Hygroscopic water
[(NH4)2SO4FeSO66H2O] is the formula of _________?
A. Ammonium sulphate Iron sulphate
B. Sodium ammonium sulphate
C. Ferrous Ammonium sulphate
D. None of the above
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