Neco 2023 Agricultural Science Question 14
Practice objective / multiple choice question 14 from the 2023 Neco Agricultural Science examination.
A tilapia pond covers an area of 0.5 ha (5000 m\(^2\)) with an average depth of 1.2 m, holding 10 000 fish each weighing 250 g. At 28 °C each fish consumes 0.12 g O\(_2\) per hour. The pond loses dissolved oxygen to the atmosphere at a rate of 0.05 g O\(_2\) m\(^-2\) h\(^-1\). The water initially contains 4 mg O\(_2\) L\(^-1\) and must be maintained at a minimum of 5 mg L\(^-1\). An aerator supplies 2 g O\(_2\) per hour per kW of power. Determine the minimum aerator power (kW) required to keep the dissolved oxygen at or above 5 mg L\(^-1\).
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About This Question
This is Neco 2023 Agricultural Science Question 14. It is one of the objective questions from the 2023 Neco Agricultural Science examination.
Difficulty level: Hard .
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