Category: Soil Science

A. RSC=(CO32 + HCO2) (Na + K + Ca2 + Mg2)
B. RSC=(CO32 + HCO2) ( Ca2 + Mg2)
C. None of the above
D. non of these

A. 39.0
B. 40.0
C. 41.0
D. 38.0

A. Pakistan
B. Canada
C. Alaska
D. Both b & c

A. Course-grained like
B. Fine grained
C. Large-Glassy
D. Phenocryst

A. Salinity
B. Property of polluted material
C. Both a & b
D. None of the above

A. Seepage
B. Soil erosion
C. Soil contamination
D. All the above

A. ECP
B. ECe
C. ECs
D. Ecw

A. Fe & Ni
B. Mg & Ni
C. Cu & Ni
D. None of these

A. Primary hydration
B. ppm
C. Normality
D. Residence time

A. 5.0 to 6.5
B. 6.5 to 7.5
C. 7.5 to 8.5
D. 8.5 to 9.5