Multiple choice

Which of the following is the purest from of natural water?

  1. River water

  2. Filtered water

  3. Rain water

  4. Mineral water
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Rain water is the purest form of natural water because it forms through the process of evaporation and condensation, which naturally removes most impurities. River water contains dissolved minerals and pollutants from the ground it flows over, filtered water still contains some dissolved substances, and mineral water has added minerals for taste.

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