1.
- are used to identity different types of plastics
2. The fully natural fbres are called
3. Nylon melts on heating Silk-on
heating
are that neutralize stomach acid.
6. Penicillin was first discovered by
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Answer:All NCERT textbook questions have been solved by our expert teachers. ... are hence called synthetic fibres. 2. Rayon is different from synthetic fibres because: ... Ans. Nylon fibres are very strong so they are used for making parachutes and ... These are the plastics that can be deformed easily on heating and can bend also.
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