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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does ppm stand for?
💡 Hint: It is a measure of concentration.
Question 2
Easy
Calculate the ppm if there are 0.005 g of salt in 1 kg of water.
💡 Hint: Convert kg to grams first.
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 is the formula for calculating ppm?
- A: Volume of solute / Volume of solution × 10^6
- B: Mass of solute / Mass of solution × 10^6
- C: Number of parts of solute / Total number of parts × 10^6
💡 Hint: Look closely at the definition of ppm.
Question 2
True or False: ppm is only used in environmental science.
- True
- False
💡 Hint: Think of multiple fields where tiny concentrations are relevant.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A lake has a concentration of 3 ppm of a specific pollutant. If the lake has 10 billion liters of water, how much of the pollutant is in the lake?
💡 Hint: Use the definition of ppm to break it down into parts.
Question 2
A manufacturer must ensure that the lead content in their product does not exceed 5 ppm due to health regulations. If they discover the product has 10 times that concentration, what steps should they take?
💡 Hint: Focus on compliance with legal safety standards.
Challenge and get performance evaluation