Question

A student had heard that rainwater is as good as distilled water. So, he collected some rainwater in a clean glass beaker and tested it. To his surprise he found that the compass needle showed deflection. What could be the reason?

Answer 1

Answer:

the deflection of the compass needle shows the current passing through the compass Needle

Answer 2

Conduction of electricity in rain water:

• Distilled water is water with no salts in it where rain water contain salt in it. When there is no salt, there is no electricity flowing through it.
• Salt is nothing but sodium chloride which has ionic bond.
• When salt gets dissolved in water, the sodium chloride ionizes into sodium (positive) ions and chloride (negative) ions.
• The ions freely flow through water and conducts electricity.
• When the salinity of water increases then the electricity flowing through the wire increases.