Cation exchange capacity (CEC) of mica is
A. 0
B. 40 - 50
C. 70 - 90
D. 200 - 250
Answer: Option A
Solution(By Examveda Team)
CEC (cation exchange capability), is a measure of negatively charged sites on the surface, which help in holding positively charged ions and nutrients.It is a calculated value that is an estimate of the soil's ability to attract, retain and exchange cation elements. It is reported in milliequivalents per 100 grams of soil (meq/100 g).
CEC of mica is 0 as the surface charge of clays varies from 0.11 to 0.20.
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