Properties and Uses of Resins and Polymers

The video discusses the classification of polymers into four types: plastics, elastomers, fibers, and resins. Plastics are versatile polymers used in daily life, such as PVC and nylon. Elastomers are stretchable polymers like natural rubber. Fibers are polymers drawn into long filaments, including nylon and polyester. Resins are polymers in forms like flakes or liquids, used in various applications. Each type of polymer has unique properties and uses.

Which of the following is NOT a type of polymer based on form and usage?

• Fibers

• Metals

• Elastomers

• Plastics

What is a key characteristic of plastics?

• They cannot be recycled.

• They are always biodegradable.

• They can be shaped into hard and tough articles.

• They are always liquid at room temperature.

Which of the following is an example of a plastic?

• Cellulose

• Natural rubber

• Nylon

• Silicone rubber

What is a defining feature of elastomers?

• They can be stretched to at least twice their length.

• They dissolve in water.

• They are rigid and brittle.

• They are always transparent.

Which of the following is NOT an example of an elastomer?

• Silicone rubber

• Polyester

• Synthetic rubber

• Natural rubber

What is the aspect ratio of fibers?

• At least 200

• At least 100

• At least 50

• At least 10

Which of the following is a common fiber used in daily life?

• Silicone

• PVC

• Nylon

• Epoxy

What form can resins take?

• Only gaseous

• Only liquid

• Flakes, granules, or viscous liquids

• Only solid

Which of the following is NOT a type of resin?

• Phenolic

• Epoxy

• Nylon

• Polyester

What is a common use of resins?

• As a food additive

• In adhesives and sealants

• As a fuel

• In textile manufacturing