Polymerization and Uses of Polythene

This video tutorial covers the polymerization of ethene to form polythene, explaining the process of breaking ethene's double bond under high temperature and pressure to create long polymer chains. It discusses how different monomers result in various polymers with unique properties. The video also guides viewers on writing polymerization equations and highlights the differences between low-density and high-density polyethene, including their applications in everyday products.

What is the starting material for the formation of polythene?

• Propane

• Chloroethene

• Ethene

• Butane

At what conditions does the polymerization of ethene occur?

• Low temperature and high pressure

• High temperature and high pressure

• High temperature and low pressure

• Low temperature and low pressure

What is the term used for the repeating unit in a polymer chain?

• Dimer

• Oligomer

• Polymer

• Monomer

What symbol is used to represent the number of repeat units in a polymer?

• N

• P

• R

• M

What type of polymer is formed when the monomer is simply repeated?

• Copolymers

• Cross-linked polymer

• Addition polymer

• Condensation polymer

What is the range of molecules that can join together to form polyethene?

• 100 to 1000

• 2000 to 20000

• 10000 to 100000

• 500 to 5000

What property of polyethene is influenced by its long chain lengths?

• Color

• Flexibility

• Density

• Strength

Which form of polyethene is commonly used for plastic bags?

• High-density polyethene

• Low-density polyethene

• Cross-linked polyethene

• Biodegradable polyethene

What is a common use for high-density polyethene?

• Rubber tires

• Food storage containers

• Glass bottles

• Plastic bags

What is the boiling point characteristic of high-density polyethene compared to low-density polyethene?

• No boiling point

• Same boiling point

• Higher boiling point

• Lower boiling point