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Organic Chemistry: Polymers - SS3 Chemistry Past Questions and Answers - page 2

11

Explain the concept of polymers and their significance in modern materials science. Provide examples of synthetic and natural polymers, highlighting their unique properties and applications.

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12

Discuss the environmental impact of plastics and the challenges faced in mitigating plastic pollution. Analyse current strategies and technologies aimed at reducing plastic waste.

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13

Discuss the environmental impact of plastics and the challenges faced in mitigating plastic pollution. Analyse current strategies and technologies aimed at reducing plastic waste.

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14

Which of the following polymers is an example of a thermosetting polymer?

 

A

Polyethylene

 

B

Polypropylene

 

C

Polyvinyl chloride (PVC)

 

D

Phenolic resin

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15

Which type of polymerization process leads to the formation of nylon and polyester?

 

A

Addition polymerization

 

B

Condensation polymerization

 

C

Copolymerization

 

D

Ring-opening polymerization

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16

What type of polymer is formed when two different monomers are polymerized together?

 

A

Homopolymer

 

B

Copolymer

 

C

Isopolymer

 

D

Heteropolymer

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17

Which of the following polymers exhibits the property of the shape-memory effect?

 

A

Polyethylene

 

B

Polypropylene

 

C

Polyurethane

 

D

Polystyrene

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18

What is the main difference between thermoplastics and thermosetting polymers?

 

A

Thermoplastics can be recycled, while thermosetting polymers cannot.

 

B

Thermoplastics are amorphous, while thermosetting polymers are crystalline.

 

C

Thermoplastics can be moulded and remoulded multiple times, while thermosetting polymers are permanently shaped after curing.

 

D

Thermoplastics are derived from natural sources, while thermosetting polymers are synthetic.

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19

Discuss the classification of polymers based on their origin, structure, and behaviour. Provide examples of each polymer class, and explain their unique characteristics and applications.

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20

Which type of polymerization involves the formation of a simple molecule, such as water, as a byproduct during the polymerization process?

 

A

Addition Polymerization

 

B

Condensation Polymerization

 

C

Radical Polymerization

 

D

Step-Growth Polymerization

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