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
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Which of the following polymers is an addition polymer?
Polyethylene
Polyvinyl chloride (PVC)
Polypropylene
Polystyrene
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The process of converting monomers into polymers is known as:
Polymerization
Oligomerization
Condensation
Isomerization
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Cross-linking in polymers leads to:
Decreased mechanical strength
Increased flexibility
Decreased chemical stability
Enhanced mechanical strength
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What type of polymerization mechanism involves the generation of free radicals?
Condensation polymerization
Addition polymerization
Copolymerization
Ring-opening polymerization
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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
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Which of the following is a thermosetting polymer?
Polyethylene
Polypropylene
Bakelite
Polyvinyl chloride (PVC)
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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
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Which type of copolymer consists of alternating monomer units in the polymer chain?
Random copolymer
Block copolymer
Graft copolymer
Alternating copolymer
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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
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