Polymers

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Polymers

Test1 Max. Marks = 40

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1. Which one among the following is a thermosetting plastic

4 points

(a) PVC

(b) PVA

(d) Perspex

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2.Thermoplastics are

4 points

(a) Linear polymers

(b) Highly cross-linked

(d) Crystalline

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3.Among the following a natural polymer is

4 points

(a) Cellulose

(b) PVC

(d) Polyethylene

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4. Which of the following is a branched polymer

4 points

(a) Low density polymer

(b) Polyester

(d) Nylon

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5.Natural rubber is which type of polymer

4 points

(a) Condensation polymer

(b) Addition polymer

(d) None of these

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6.Polyethylene is

4 points

(a) Random copolymer

(b) Homo polymer

(d) Crosslinked copolymer

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7.Which of the following is an example of condensation polymers

4 points

(a) Polythene

(b) PVC

(d) Terylene

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8.The catalyst used for the polymerisation of olefins is

4 points

(a) Ziegler Natta catalyst

(b) Wilkinson’s catalyst

(d) Zeise’s salt catalyst

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9.Which of the following is not a polymer

4 points

(a) Silk

(b) DNA

(d) Starch

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10. Which of the following is used in vulcanization of rubber

4 points

(a) SF₆

(b) CF₄

(d) C₂F₂

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