Which one of the following is pure water?
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Rain water
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Filter water
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Tubewell water
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Distilled water
A
Correct answer
Explanation
Rain water is the purest natural form of water as it evaporates from water bodies, condenses, and falls before contacting ground surfaces. Distilled water is purer but processed artificially. Filter and tubewell water contain dissolved minerals and impurities from soil and pipes.