Let's Save Water — LOOKING AROUND ENVIRONMENTAL STUDIES STD 3 — Question
Gujarat BoardEnglish MediumSTD 3LOOKING AROUND ENVIRONMENTAL STUDIESLet's Save Water1 Mark
Question
What is done to make dirty water usable ?
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Answer
A piece of alum is immersed in dirty water. This makes all the dirt settle down at the bottom. The water on top is carefully strained and taken in another pot. This water can now be used.
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