1. Visit the water testing laboratory in your area and collect the information about tests for checking purity of water.
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pH- pH of water is being tested to determine the acidity or alkalinity of water. pH is the measure of the power of hydrogen. ... Presence of bacteria can be ascertained by culturing the water sample in appropriate media. Mostly presence of coli form bacteria such as E.
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If we introduce a litmus paper into pure water it's color doesn't changes, it remains same
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