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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is mass balance?
💡 Hint: Think about how we track everything that goes in and out.
Question 2
Easy
How does rainwater affect sludge concentration?
💡 Hint: Consider the mixing of substances.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does mass balance ensure in a system?
- Mass input is greater than output
- Mass input equals output
- No mass is accounted for
💡 Hint: Think of the conservation of mass principle.
Question 2
True or False? Rainwater has no effect on contaminant concentration.
- True
- False
💡 Hint: Consider the definition of concentration and dilution.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A waste tank initially has 500,000 kg of sludge with 20% moisture content. If 500 m³ of rainwater enters, calculate the final concentration of chemical A if it was initially 300 mg/kg in the dry weight.
💡 Hint: Break down the problem into parts. Determine initial mass and moisture before calculating.
Question 2
Consider a scenario where the rainwater introduced has 100 mg of chemical A per liter. How does this impact the mass balance?
💡 Hint: Account for additional inputs when estimating final concentrations.
Challenge and get performance evaluation