Waec Model Questions Vol1 2021 Agricultural Science Question 4
Practice objective / multiple choice question 4 from the 2021 Waec Model Questions Vol1 Agricultural Science examination.
Cassava chips have an initial moisture content of 55 % (wet basis) and must be dried to 12 % (wet basis). In a drying chamber operating at 45 °C with an airflow of 2 m s⁻¹, the equilibrium moisture content is 10 % (wet basis) and the drying follows the first‑order model dM/dt = -k(M - M_e) with k = 0.5 h⁻¹. Determine the minimum drying time required (in hours, to two decimal places).
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About This Question
This is Waec Model Questions Vol1 2021 Agricultural Science Question 4. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Hard .
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