Biology
Grade-8
Easy
Question
I was used before people had access to other purifiers.
- Iodine
- Reverse osmosis
- Distillation
- Clay vessel filtration
Hint:
Clay vessel filtration is the oldest way to filtrate water.
The correct answer is: Clay vessel filtration
- Ceramic filtration is the use of porous ceramic (fired clay) to filter microbes or other contaminants from drinking water.
- Raw water seeps through the ceramic filter element by gravity at a post-production rate of 1.7 to 3.5 liters per hour producing potable water.
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