Walkley and Black's method of organic matter determination allows percent recovery.
A. 54
B. 64
C. 80
D. 74
Answer: Option D
Solution(By Examveda Team)
Walkley and Black's method quantifies the amount of oxidizable organic matter in which organic matter is oxidized with a known amount of chromate in the presence of sulphuric acid.This method claims to estimate organic carbon and determine the overall organic matter and the percent recovery is about 74%.
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