Neco 2018 Agricultural Science Question 18
Practice objective / multiple choice question 18 from the 2018 Neco Agricultural Science examination.
Cassava chips have an initial moisture content of 45 % (wet basis). They must be dried to a final moisture content of 12 % (wet basis) before storage. In a solar dryer operating at 45 °C the drying rate follows the empirical law \( \frac{dM}{dt}= -k\,(M-M_e) \) where \(M\) is the moisture content (% wb), \(M_e =10\%\) is the equilibrium moisture content at this temperature, and \(k =0.8\ \text{h}^{-1}\). Assuming the moisture content changes continuously according to this law, calculate the drying time (in hours) required to reach the target moisture content.
Answer Options
About This Question
This is Neco 2018 Agricultural Science Question 18. It is one of the objective questions from the 2018 Neco Agricultural Science examination.
Difficulty level: Hard .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.