Q. Which of the following additives are added to plastics to make it impervious to X-rays ?

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Q. Paper like thin plastic articles can be produced by

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Q. Addition polymerisation takes place either by a free radical mechanism or ionic machanism depending on the reagents used. Free radical polymerisation is catelyzed by __________ , which decompose to give free radicals.

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Q. __________ polymer is used for making unbreakable crockery.

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Q. Flexible plastic pipes are made of

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Q. Main constituent of natural rubber is

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Q. In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the

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Q. Thermal pyrolysis of ethylene dichloride produces

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Q. Pick out the wrong statement.

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Q. The only natural thermoplastic resin, which is a product of animal life is

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Q. Silicone is a/an

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Q. Which of the following polymers are produced by employing all bulk polymerisation, solution polymerisation & suspension polymerisation technique of addition (chain) polymerisation ?

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Q. Polymers are

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Q. Nylon-6 is a

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Q. Rain coats are made of

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Q. Condensation polymerisation of __________ produces bakelite.

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Q. __________ is not a condensation polymer.

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Q. Nylon-66 is a polyamide of

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Q. Branched chain polymers compared to linear polymers have higher

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Q. Styrene butadiene rubber is commercially manufactured by

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