The little clay mineral is_____________________?
A. Non-expending
B. Expending
C. None or little expending
D. None of the above
Soil Science
The chemical formula of Hematite is_____________________?
The chemical formula of Hematite is_____________________?
A. AL (OH)2
B. Fe2O3
C. Fe OOH
D. None of the above
The deficient level of N (%) in plants suggested by various workers is____________________?
The deficient level of N (%) in plants suggested by various workers is____________________?
A. 0%
B. 3%
C. 5%
D. 10%
Most of the productive soils in Pakistan have pH______________________?
Most of the productive soils in Pakistan have pH______________________?
A. Between 7.5 to 8.5
B. 8.5
D. None of the above
The reaction of Na2 CO3 salt is____________________?
The reaction of Na2 CO3 salt is____________________?
A. Alkaline
B. Neutral
C. Acidic
D. None of the above
The unit of electrical conductivity is____________________?
The unit of electrical conductivity is____________________?
A. dsm-1
B. mmhos/m
C. ms/cm
D. Al the above
A compound toxic to crop formed by the thermal decomposition of urea is_________________?
A compound toxic to crop formed by the thermal decomposition of urea is_________________?
A. Uric acid
B. Biurct (NH2CONH CONH2 H2O)
C. Diuret
D. Both b & c
The kaolininte is a layer silicate clay mineral, it is 1:1 type of mineral with___________________?
The kaolininte is a layer silicate clay mineral, it is 1:1 type of mineral with___________________?
A. 3-15 meq/100g CEC
B. 40 meq/100g CEC
C. 50 meq/100g CEC
D. None of the above
The term applied to a material which tends to absorb moisture from the atmosphere is called__________________?
The term applied to a material which tends to absorb moisture from the atmosphere is called__________________?
A. Capillary
B. Hydroscopic
C. Available
D. Gravitational
Buffer solution is a solution which resist change in __________________ ?
Buffer solution is a solution which resist change in __________________ ?
A. pH
B. SAP
C. EC
D. RSC