Q. Plasticisers are added to synthetic plastics to

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Q. Cellulose is the main contituent of most __________ fibres.

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Q. __________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine.

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Q. __________ tubes are good substitude for human blood vessels onrheart by-pass operation.

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Q. Nitrile rubber is produced by the polymerisation of

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Q. Celluloid is

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Q. Styrene butadiene rubber (SBR) as compared to natural rubber has

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Q. Which of the following polymers has the tendency of decomposing before melting ?

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Q. Which of the following polymers belong to the class of formaldehyde resin ?

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Q. Addition polymerisation is not involved in the manufacture of

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Q. Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are

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Q. Most of the plastics are safe to be used upto a maximum temperature of __________ °C.

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Q. __________ is a homopolymer.

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Q. Plastic tubes & pipes are generally made by __________ moulding.

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Q. Nylon 6 as compared to nylon 6, 6 has lower

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Q. Which of the following is the most important rubber compounding ingradient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness ?

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Q. __________ is an addition polymer

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Q. Branched chair polymers as compared to linear polymers have

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Q. Ion exchange resins are made of

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Q. Flexible foam (for mattresses) are usually made of

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