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MBD-SYNTHETIC FIBERS AND PLASTICS-EXAMPLE
- Which type of thermosetting plastic is used to make switches, which is...
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- Which out of the following is thermoplastic?
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- Synthetic fibres are made from small units called:
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- Sericulture is the bringing up of which creature?
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- Natural polymer is:
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- Name some natural materials.
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- Write the name of one' natural polymer.
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- Name a fibre which is silk like but man made.
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- Which fibre is obtained from woodpulp?
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- In which year, Nylon was made?
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- Which fibre was made from coal, air and water?
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- Of which fibre, parachutes and tents are made of?
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- What is PET?
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- Why parachutes and ropes for climbing rocks are made of Nylon?
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- Give few characteristics of plastics .
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- What are Polythene and PVC?
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- Bakelite is an example of which type of plastic?
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- Where is Teflon used?
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- Which of these fibres is costly---wool, rayon?
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- Why does hot water deform plastic bottles?
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