The formula used for calculating RSC is _____________________?

Related Mcqs:

1. The EC: SAR and RSC values suggested by WAPDA for 3rd class irrigation water(C,S,R,) are____________________?

   A. ECi:<1.5, SAR < 10 & RSC< 2.5
   B. ECi:>1.5, SAR > 10 & RSC> 2.5
   C. ECi:>1.5, SAR 2.5
   D. Both a & b

2. The exact formula for calculating the base saturation percentage is_____________________?

   A. Bas saturation percentage = CA+Mg+Na / CEC x 100
   B. Bas saturation percentage = /CEC / CA+Mg+Na x 100
   C. Bas saturation percentage = /CEC / CA+Mg x 100
   D. None of the above

3. The chemical formula of urea fertilizer is_______________________?

   A. NH₂CONH₂
   B. [CO(NH₂)]
   C. Both a & b
   D. None of the above

4. 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

5. [(NH4)2SO4FeSO66H2O] is the formula of _______________________?

   A. Ammonium sulphate Iron sulphate
   B. Sodium ammonium sulphate
   C. Ferrous Ammonium sulphate
   D. None of the above

6. C12H12N-NaO8S2 is the chemical formula of ____________________?

   A. Activated charcoal
   B. Azomethine H
   C. Carbonated sodium sulphate
   D. None of the above

7. The exact chemical formula of DAP fertilizer is___________________?

   A. (NH2) HPO4
   B. NH4H2PO4
   C. NH4H2PO4
   D. Both a & c

8. The chemical formula of Dolomite is________________?

   A. CaMg (CO3)2
   B. MgCO3
   C. CaCO3
   D. None of the above

9. The exact formula for sodium hexametaphosphate is___________________?

   A. [(NaPO6)13]
   B. [(NaPO3)13]
   C. [(NaPO2)6]
   D. None of the above

10. The chemical formula for Ammonium acctatc is_____________________?

    A. NH3OAC
    B. NH4OAC
    C. NH4AOC
    D. Both b & c