Paheli had heard that rainwater is as good as distilled water. So she collected some rainwater 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 reason?

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Solution

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

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