Organic Chemistry: Polymers - SS3 Chemistry Past Questions and Answers - page 1
What is the primary factor that distinguishes a polymer from other macromolecules?
Monomer composition
Molecular weight
Solubility
Chain length
Which of the following polymers is an addition polymer?
Polyethylene
Polyvinyl chloride (PVC)
Polypropylene
Polystyrene
The process of converting monomers into polymers is known as:
Polymerization
Oligomerization
Condensation
Isomerization
Cross-linking in polymers leads to:
Decreased mechanical strength
Increased flexibility
Decreased chemical stability
Enhanced mechanical strength
What type of polymerization mechanism involves the generation of free radicals?
Condensation polymerization
Addition polymerization
Copolymerization
Ring-opening polymerization
The degree of polymerization (DP) is defined as:
The ratio of monomer units to the total number of atoms in a polymer
The number of monomer units in a polymer chain
The ratio of monomer to solvent in a polymer solution
The length of a polymer chain in nanometers
Which of the following is a thermosetting polymer?
Polyethylene
Polypropylene
Bakelite
Polyvinyl chloride (PVC)
The glass transition temperature (Tg) of a polymer is a measure of:
Its ability to crystallise
Its resistance to thermal degradation
Its flexibility
Its transition from a hard and brittle state to a soft and rubbery state
Which type of copolymer consists of alternating monomer units in the polymer chain?
Random copolymer
Block copolymer
Graft copolymer
Alternating copolymer
Biodegradable polymers are designed to:
Undergo chemical cross-linking
Break down into natural byproducts through natural processes
Exhibit high thermal stability
Be resistant to microbial degradation