A soil with 20 me/100g CEC and 5 me/100g exchangeable H will have a base saturation of

A. 25%

B. 80%

C. 75%

D. 133.5%

Answer: Option A

Solution(By Examveda Team)

To calculate the percent base saturation, divide the sum of the K, Mg, Ca, and Na (the bases) in meq/100g soil by the CEC. Multiply the result by 100%.
Based on the formula A soil with 20 me/100g CEC and % me/100g exchangeable H will have a base saturation of 25%.