Neco 2021 Agricultural Science Question 33
Practice objective / multiple choice question 33 from the 2021 Neco Agricultural Science examination.
Cassava chips are dried in two stages. Stage 1 lasts 4 h at 60 °C and reduces the moisture content linearly from 45 % to 25 % (wet basis). Stage 2 follows at 45 °C, where the moisture content follows the exponential model \(M(t)=M_{0}e^{-kt}\) with \(k=0.1\) h⁻¹ and \(M_{0}=25\)% at the start of stage 2. The target final moisture is 12 %. Determine the total drying time (hours) required to reach the target moisture. Give your answer to one decimal place.
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About This Question
This is Neco 2021 Agricultural Science Question 33. It is one of the objective questions from the 2021 Neco Agricultural Science examination.
Difficulty level: Hard .
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