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18 Questions

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Properties of Plastics

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Questions and Answers

Which property of plastics makes them suitable for soundproofing?

Electric insulation

Fire resistance

Sound absorption (correct)

Humidity maintenance

What is the primary factor that determines the weather resistance of plastics?

Chemical composition during manufacturing (correct)

Dimensional stability

Thermal property

Optical property

What is the property of plastics that allows them to be reused?

Optical property

Ductility

Recycling (correct)

Thermal property

Which property of plastics affects their ability to transmit light?

Optical property Signup and view all the answers

What is the primary advantage of thermo-plastic types of plastics?

Easy reshaping and reuse Signup and view all the answers

Why do plastics offer great corrosion resistance?

Due to their chemical composition during manufacturing Signup and view all the answers

What is the primary function of acoustic boards produced by saturating phenolic resins?

To provide sound insulation Signup and view all the answers

Which of the following properties of plastics is similar to that of wood?

Thermal property Signup and view all the answers

What is the primary advantage of recycling plastics?

To minimize environmental pollution Signup and view all the answers

What is the characteristic of translucent plastics?

Allowing light to pass through but changing its direction Signup and view all the answers

What is the primary application of foamed and expanded plastics?

As thermal insulators Signup and view all the answers

What is the characteristic of most plastics in terms of weather resistance?

They are capable of resisting weathering except for some limited varieties Signup and view all the answers

Which of the following plastics is not known for its fire resistance?

Cellulose acetate Signup and view all the answers

What is the primary reason why plastics are not affected by termites and rodents?

Because they have no nutrition values Signup and view all the answers

What is a limitation of thermo-plastic type plastics?

They have low melting point Signup and view all the answers

What makes plastics suitable for use in electric cables and electronic tools?

Their good electric insulation properties Signup and view all the answers

Why are thermo setting type plastics not suitable for recycling?

Because they have high melting point Signup and view all the answers

What is a benefit of plastics in terms of maintenance?

They do not need any surface finishing coats or paints Signup and view all the answers