Total salt affected soils of Pakistan are____________________?
A. 6.3 m ha
B. 5.0 m ha
C. 12.3 m ha
D. 10.5 m ha
Agriculture Mcqs
Cyclic salts are mostly of ______________________?
Cyclic salts are mostly of ______________________?
A. SO4
B. HCO3
C. Cl–
D. None of the above
Corrositivity of water is an indication of___________________?
Corrositivity of water is an indication of___________________?
A. Salinity
B. Property of polluted material
C. Both a & b
D. None of the above
The earth core is made of the following metals ______________________?
The earth core is made of the following metals ______________________?
A. Fe & Ni
B. Mg & Ni
C. Cu & Ni
D. None of these
Equation of Ozone is________________________?
Equation of Ozone is________________________?
A. O2 + O =O3
B. O3 + O
C. O2 O
D. None of the above
Mean annual precipitation for tundra region is ____________________?
Mean annual precipitation for tundra region is ____________________?
A. 70-80 cm
B. 150-70 cm
C. 0-50 cm
D. None of the above
Formula used for the calculation of sodium absorption ratio is______________________?
Formula used for the calculation of sodium absorption ratio is______________________?
A. SAR=Na / [(Ca+Mg)1/2] Na x 2
B. SAR=Na / CEC x 100
C. SAR=Na / CEC x 100
D. None of these
The moisture content below which a cohesive soil does stick to metal tools is known as______________________?
The moisture content below which a cohesive soil does stick to metal tools is known as______________________?
A. Liquid limit
B. Plastic limit
C. Sticky limit
D. Alter berg limit
The symbol of Na stands for___________________?
The symbol of Na stands for___________________?
A. Nickle
B. Natrium
C. Neon
D. None of these
pF unit is used for the measurement of_____________________?
pF unit is used for the measurement of_____________________?
A. Hydraulic potential
B. Hydraulic conductivity
C. Negative soil water potential
D. All the above