Paheli had heard that rain water is as good as distilled water. So, she collected some rain water in a clean glass tumbler

Monjur Alahi

Paheli had heard that rain water is as good as distilled water. So, she collected some rain water in a clean glass tumbler and tested it using a tester. To her surprise, she found that the compass needle showed deflection. What could be the reasons?


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Salim Ahmed Kawsar

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Rainwater contains dissolved salts. This makes it a conducting solution. There are no dissolved salts present in the distilled water. Hence, rainwater can allow electricity to pass through it while distilled water cannot

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