Waec Model Questions Vol1 2022 Agricultural Science Question 26
Practice objective / multiple choice question 26 from the 2022 Waec Model Questions Vol1 Agricultural Science examination.
Cassava chips are dried at 60°C. The initial moisture content (wet basis) is 55% and the desired safe moisture content is 12%. The equilibrium moisture content at this temperature is 10%. Moisture removal follows the exponential law M_t = M_eq + (M_0 - M_eq) e^{-k t}, where the rate constant k (h⁻¹) is given by k = 0.8 e^{-5000/(8.314(60+273))}. Calculate the drying time (in hours) required to reach the safe moisture content.
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About This Question
This is Waec Model Questions Vol1 2022 Agricultural Science Question 26. It is one of the objective questions from the 2022 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Hard .
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