Neco Model Questions Vol1 2017 Agricultural Science Question 39
Practice objective / multiple choice question 39 from the 2017 Neco Model Questions Vol1 Agricultural Science examination.
Cassava chips are dried in a solar dryer. Their moisture content on a wet basis is initially 55 % and must be reduced to 12 % for safe storage. The drying follows the exponential model \(M(t)=M_{eq}+\bigl(M_{0}-M_{eq}\bigr)e^{-kt}\), where \(M(t)\) is the moisture content (wet basis) after time \(t\) (in days), \(M_{eq}=10\%\) is the equilibrium moisture content, \(M_{0}=55\%\) is the initial moisture, and the drying constant \(k=0.15\ \text{day}^{-1}\). Calculate the drying time required (in hours) to reach the target moisture content of 12 %. Give your answer to the nearest whole hour.
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About This Question
This is Neco Model Questions Vol1 2017 Agricultural Science Question 39. It is one of the objective questions from the 2017 Neco Model Questions Vol1 Agricultural Science examination.
Difficulty level: Hard .
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