Polymers: Dive into the World of Plastics, Rubbers, and Composites

Question 1

What is the purpose of adding a plasticizer to a polymer?

Accepted Answer

To increase its flexibility

Answer

To improve its rigidity

Answer

To enhance its thermal stability

Answer

To reduce its electrical conductivity

Question 2

What is the fundamental difference between thermoplastic and thermosetting polymers?

Accepted Answer

Thermoplastics can be repeatedly melted and reshaped, unlike thermosets.

Answer

Thermosets are stronger and more rigid than thermoplastics.

Answer

Thermoplastics are typically used in high-temperature applications, while thermosets are not.

Answer

Thermosets are electrical insulators, whereas thermoplastics are electrical conductors.

Question 3

Which property of polymers makes them suitable for use in lightweight materials?

Accepted Answer

Low density

Answer

High strength

Answer

Electrical conductivity

Answer

Biodegradability

Question 4

Which type of polymer is known for its elasticity and ability to withstand repeated stretching?

Accepted Answer

Elastomer

Answer

Thermoplastic

Answer

Thermosetting

Answer

Fiber

Question 5

Which process involves chemically bonding polymer chains together?

Accepted Answer

Cross-linking

Answer

Polymerisation

Answer

Extrusion

Answer

Moulding

Question 6

Which of the following is a potential environmental concern associated with polymers?

Accepted Answer

Non-biodegradability

Answer

Toxicity

Answer

Depletion of resources

Answer

Air pollution

Question 7

Which type of polymer is commonly used in medical devices due to its biocompatibility?

Accepted Answer

Polyurethane

Answer

Polyethylene

Answer

Polyvinyl chloride

Answer

Polystyrene

Question 8

Which among the following is NOT a classification of polymers?

Accepted Answer

Ceramic

Answer

Plastic

Answer

Rubber

Answer

Composite

Question 9

Thermoplastic polymers are characterized by their ability to:

Accepted Answer

Be repeatedly softened upon heating and solidified upon cooling.

Answer

Withstand high temperatures without melting.

Answer

Exhibit high strength and rigidity.

Answer

Decompose easily in the environment.

Question 10

Copolymers differ from homopolymers in that copolymers:

Accepted Answer

Consist of multiple different monomers.

Answer

Are more flexible than their homopolymer counterparts.

Answer

Possess higher strength than homopolymers.

Answer

Exhibit no significant differences from homopolymers.

Question 11

Which of the following polymers is an example of a biodegradable material?

Accepted Answer

Polylactic acid

Answer

Polyethylene

Answer

Polyvinyl chloride

Answer

Polystyrene

Question 12

In the context of polymerisation, a catalyst plays a crucial role in:

Accepted Answer

Initiating and accelerating the reaction.

Answer

Preventing the reaction from occurring.

Answer

Breaking down polymer chains.

Answer

Altering the color of the polymer.

Question 13

Which type of polymer is known for its elasticity and waterproof properties?

Accepted Answer

Elastomer

Answer

Thermoplastic

Answer

Thermosetting

Answer

Composite

Question 14

What is the process of forming a polymer from monomers called?

Accepted Answer

Polymerization

Answer

Cross-linking

Answer

Additivation

Answer

Combustion

Question 15

Which of the following is a biodegradable polymer?

Accepted Answer

Polylactic acid

Answer

Polyethylene

Answer

Polyvinyl chloride

Answer

Polypropylene

Question 16

What is the name of the process used to strengthen polymers by adding fibres or particles?

Accepted Answer

Composite fabrication

Answer

Polymerization

Answer

Additivation

Answer

Polymer blending

Question 17

Which of the following is a widely used thermoplastic polymer found in packaging and automotive parts?

Accepted Answer

Polyethylene

Answer

Epoxy resin

Answer

Nylon

Answer

Polyurethane

Question 18

What is the term for the repeating structural unit of a polymer?

Accepted Answer

Monomer

Answer

Dimer

Answer

Trimer

Answer

Oligomer

Question 19

Which type of bond links monomers together to form a polymer?

Accepted Answer

Covalent bond

Answer

Metallic bond

Answer

Hydrogen bond

Answer

Ionic bond

Question 20

Which property of a polymer makes it suitable for making flexible pipes?

Accepted Answer

Elasticity

Answer

High tensile strength

Answer

Hardness

Answer

Electrical conductivity

Question 21

Which polymer is commonly used in the manufacture of car bumpers due to its impact resistance?

Accepted Answer

Polypropylene

Answer

Polystyrene

Answer

Polyvinyl chloride

Answer

Polyethylene

Question 22

What is the characteristic functional group found in the molecular structure of synthetic rubbers?

Accepted Answer

Double bond

Answer

Triple bond

Answer

Ester group

Answer

Benzene ring

Question 23

Which of the following renewable resources is used in the production of bioplastics?

Accepted Answer

Cornstarch

Answer

Petroleum

Answer

Coal

Answer

Natural gas

Question 24

What is a primary advantage of using composite materials over traditional materials?

Accepted Answer

Improved strength-to-weight ratio

Answer

Enhanced flexibility

Answer

Reduced cost

Answer

Increased thermal insulation

Question 25

Which polymer is known for its high temperature resistance and chemical inertness?

Accepted Answer

Polyetheretherketone (PEEK)

Answer

Polyethylene terephthalate (PET)

Answer

Polymethyl methacrylate (PMMA)

Answer

Polycarbonate

Question 26

What is the primary purpose of adding plasticisers to polymers?

Accepted Answer

To increase flexibility

Answer

To reduce flammability

Answer

To improve electrical conductivity

Answer

To enhance strength