Practice Impurities In Water (8.7) - Water – A Precious Resource

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8 questions

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Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What are dissolved impurities? Provide two examples.
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Think of what you find in ocean water.
Question 2.
Name one type of suspended impurity.
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What would you find in dirty river water?
3Question 3.
Which of the following is an example of a dissolved impurity?
- Sand
- Sodium chloride
- Mud
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Think about what you find dissolved in ocean water.
4Question 4.
True or False: Micro-organisms in water do not pose any health risks.
- True
- False
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What kind of diseases can you get from contaminated water?
Question 5.
Discuss how the presence of both dissolved and suspended impurities could jointly affect the quality of drinking water in an urban area.
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Think about issues faced by cities with heavy industry related to water quality.
Question 6.
Evaluate how treating water with high levels of both micro-organisms and suspended impurities would differ from treating water that's primarily contaminated with dissolved salts.
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Consider the methods you learned for purifying water.

4 more questions in this section. Enroll free to practise them all.