Question

Consider the following units for measurement of salinity in irrigation water A. \(1\) mhos/m \(=\) \(1\) Siemens/m (s/m) B. \(1\) millimhos/cm \(=\) \(1\) deciSiemens/m (dS/m) C. \(1\) EC \(\times 10^{-3} = 1\) millimhos \(\per\) cm D. \(1\) EC \(\times 10^{-6} = 1\) micromhos \(\per\) cm E. meq/l \(= 10 \times\) EC \(\times 10^3\) Choose the correct answer from the options given below:

• A. A, B, C Only
• B. B, C, D Only
• C. A, B, D Only
• D. A, B, E Only

Hint:

Important salinity unit conversions: \[ \boxed{ 1\ \text{mho} = 1\ \text{Siemens} } \] \[ \boxed{ 1\ \text{mmhos/cm} = 1\ \text{dS/m} } \] Remember:
• EC increases with dissolved salts
• Higher EC means higher salinity hazard

Answer 1

The Correct Option is C