Polymers

Description: This quiz covers the fundamental concepts, properties, and applications of polymers.
Number of Questions: 15
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Tags: polymers materials science chemistry
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What is the repeating structural unit of a polymer called?

  1. Monomer

  2. Polymer

  3. Oligomer

  4. Macromolecule


Correct Option: A
Explanation:

A monomer is the basic unit that repeats to form a polymer.

Which type of polymerization involves the formation of a carbon-carbon bond between monomers?

  1. Addition polymerization

  2. Condensation polymerization

  3. Free radical polymerization

  4. Ionic polymerization


Correct Option: A
Explanation:

Addition polymerization involves the formation of a carbon-carbon bond between monomers.

What is the term used to describe the average molecular weight of a polymer?

  1. Molecular weight

  2. Number-average molecular weight

  3. Weight-average molecular weight

  4. Polydispersity index


Correct Option: B
Explanation:

Number-average molecular weight is the average molecular weight calculated by dividing the total molecular weight of all molecules in a sample by the number of molecules.

Which property of polymers is responsible for their ability to stretch and return to their original shape?

  1. Tensile strength

  2. Elongation at break

  3. Young's modulus

  4. Resilience


Correct Option: D
Explanation:

Resilience is the property of polymers that allows them to absorb energy upon deformation and return to their original shape when the stress is removed.

What is the term used to describe the glass transition temperature of a polymer?

  1. Melting point

  2. Boiling point

  3. Glass transition temperature

  4. Decomposition temperature


Correct Option: C
Explanation:

Glass transition temperature is the temperature at which a polymer changes from a glassy state to a rubbery state.

Which type of polymer is commonly used in the production of plastic bottles and containers?

  1. Polyethylene terephthalate (PET)

  2. Polypropylene (PP)

  3. Polystyrene (PS)

  4. Polyvinyl chloride (PVC)


Correct Option: A
Explanation:

Polyethylene terephthalate (PET) is commonly used in the production of plastic bottles and containers.

What is the term used to describe the process of converting a monomer into a polymer?

  1. Polymerization

  2. Depolymerization

  3. Cross-linking

  4. Vulcanization


Correct Option: A
Explanation:

Polymerization is the process of converting a monomer into a polymer.

Which type of polymer is commonly used in the production of synthetic rubber?

  1. Natural rubber

  2. Styrene-butadiene rubber (SBR)

  3. Nitrile rubber (NBR)

  4. Polyisoprene (IR)


Correct Option: B
Explanation:

Styrene-butadiene rubber (SBR) is commonly used in the production of synthetic rubber.

What is the term used to describe the process of adding cross-links between polymer chains?

  1. Polymerization

  2. Depolymerization

  3. Cross-linking

  4. Vulcanization


Correct Option: C
Explanation:

Cross-linking is the process of adding cross-links between polymer chains.

Which type of polymer is commonly used in the production of bulletproof vests and helmets?

  1. Kevlar

  2. Nomex

  3. Teflon

  4. Polyethylene


Correct Option: A
Explanation:

Kevlar is commonly used in the production of bulletproof vests and helmets.

What is the term used to describe the process of breaking down a polymer into its constituent monomers?

  1. Polymerization

  2. Depolymerization

  3. Cross-linking

  4. Vulcanization


Correct Option: B
Explanation:

Depolymerization is the process of breaking down a polymer into its constituent monomers.

Which type of polymer is commonly used in the production of electrical insulation and wire coatings?

  1. Polyethylene (PE)

  2. Polypropylene (PP)

  3. Polyvinyl chloride (PVC)

  4. Polytetrafluoroethylene (PTFE)


Correct Option: D
Explanation:

Polytetrafluoroethylene (PTFE) is commonly used in the production of electrical insulation and wire coatings.

What is the term used to describe the process of adding sulfur to rubber to improve its properties?

  1. Polymerization

  2. Depolymerization

  3. Cross-linking

  4. Vulcanization


Correct Option: D
Explanation:

Vulcanization is the process of adding sulfur to rubber to improve its properties.

Which type of polymer is commonly used in the production of contact lenses and soft drink bottles?

  1. Polyethylene terephthalate (PET)

  2. Polypropylene (PP)

  3. Polystyrene (PS)

  4. Polymethyl methacrylate (PMMA)


Correct Option: D
Explanation:

Polymethyl methacrylate (PMMA) is commonly used in the production of contact lenses and soft drink bottles.

What is the term used to describe the process of forming a polymer by the reaction of two or more different monomers?

  1. Homopolymerization

  2. Copolymerization

  3. Terpolymerization

  4. Block copolymerization


Correct Option: B
Explanation:

Copolymerization is the process of forming a polymer by the reaction of two or more different monomers.

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