Physical Properties of Water
- Mon, 10 Aug 20 PM
Distilled water is almost pure water. clean water is that which is ideal for home or domestic use i.e. safe for drinking, cooking and other home uses.
Natural source of drinking water
- Tue, 18 Aug 20 AM
Natural drinking water is water that is safe and fit for human consumption without undergoing any form of treatment which will alter its original chemical compo
Chemical composition of atmosphere
- Wed, 19 Aug 20 PM
The gaseous composition of the atmosphere consists of two categories of gases i.e. constant or permanent gases and variable gases. These gases are nitrogen, oxy
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