Today, most tea bags are made of filter paper, which is effective at holding tea leaves while allowing water to steep through, making it the most common material used. NCERT Book Curiosity Science Class 6
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After silk, people began using gauze or muslin as materials for tea bags, as they also held tea leaves effectively while allowing water to pass through. Chapter 9 Methods of Separation in Everyday Life Class VI NCERT Book Curiosity Science
Tea bags were initially made of soft cloth like silk because it could hold the tea leaves, allow water to pass through, and was strong enough to withstand contact with hot water without falling apart. NCERT Science Textbook Curiosity Science ...
The choice of filter is determined by the size of the particles that need to be removed. Different materials like cotton, charcoal, or sand are selected based on their ability to capture particles of varying sizes.
Materials such as cotton, charcoal, and sand can be used as filters, depending on the specific requirements for removing particles from a liquid. NCERT Book Curiosity Science Class 6 Class 6 Science NCERT Chapter 9