Purification of Water Quiz - CBSE Class 6 Science

Free practice quiz: Purification of Water (CBSE Class 6 Science). 19 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. What is the main reason for purifying water?

   1. To make it taste better
   2. To remove harmful substances
   3. To change its color
   4. To increase its temperature
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   Answer: B. To remove harmful substances

   The main reason for purifying water is to remove harmful substances that can be dangerous to health.

2. Which of the following is NOT a method of water purification?

   1. Chlorination
   2. Filtration
   3. Evaporation
   4. Condensation
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   Answer: D. Condensation

   Condensation is a process of changing gas to liquid, not a method used for purifying water.

3. What is the main purpose of using activated carbon in water purification?

   1. To change water color
   2. To absorb impurities
   3. To heat water
   4. To sweeten water
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   Answer: B. To absorb impurities

   Activated carbon is used to absorb impurities and improve the taste and odor of water.

4. In the process of distillation, if 15 liters of impure water yield 12 liters of distilled water, how much water has been removed?

   1. 3 liters
   2. 5 liters
   3. 2 liters
   4. 4 liters
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   Answer: A. 3 liters

   In the distillation process, the difference in initial and final volumes gives us the water removed: 15 liters - 12 liters = 3 liters.

5. What is a likely consequence of not purifying water before drinking?

   1. Increased taste
   2. Health problems
   3. Higher temperature
   4. Better hydration
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   Answer: B. Health problems

   Not purifying water can lead to health problems due to harmful microorganisms and toxins present in impure water.

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