Waec Model Questions Vol1 2019 Agricultural Science Question 12
Practice objective / multiple choice question 12 from the 2019 Waec Model Questions Vol1 Agricultural Science examination.
A farmer harvests 500 kg of fresh cassava roots with a moisture content of 70% (wet basis). The roots are sliced into chips and first dried in a solar dryer that removes water at a constant rate of 20 kg per hour. After 6 hours the chips are transferred to a mechanical dryer that removes water at a constant rate of 10 kg per hour. The safe storage moisture content is 12% (wet basis). How many additional hours must the chips spend in the mechanical dryer to reach the target moisture content?
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About This Question
This is Waec Model Questions Vol1 2019 Agricultural Science Question 12. It is one of the objective questions from the 2019 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Hard .
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