Igcse Model Questions Vol1 2017 Chemistry Question 30
Practice objective / multiple choice question 30 from the 2017 Igcse Model Questions Vol1 Chemistry examination.
An industrial plant discharges effluent containing nitrate (\(\text{NO}_3^-\)) at a concentration of 0.250 mg L\(^{-1}\) at a rate of 1500 m\(^3\) day\(^{-1}\) into a lake of volume \(2.0 \times 10^{6}\) m\(^3\). The lake initially has a nitrate concentration of 0.050 mg L\(^{-1}\). After one week of continuous discharge, the measured nitrate concentration in the lake is 0.051 mg L\(^{-1}\). Assuming complete mixing and that the only processes affecting nitrate are the discharge and removal (e.g., by denitrification), calculate the percentage of the nitrate introduced by the plant that was removed from the lake during the week.
Answer Options
About This Question
This is Igcse Model Questions Vol1 2017 Chemistry Question 30. It is one of the objective questions from the 2017 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.