a) Bakelite
b) Nylon-6,6
c) Rubber
d) Melamine
Answer: b) Nylon-6,6
Explanation: Nylon-6,6 is a thermoplastic polymer that can be
molded into different shapes on heating, unlike thermosetting plastics like
Bakelite.
a) Addition polymerization
b) Condensation polymerization
c) Copolymerization
d) Step-growth polymerization
Answer: a) Addition polymerization
Explanation: The polymerization of ethene to polyethene
involves the repeated addition of monomer units, which is characteristic of
addition polymerization.
a) Propylene and Butylene
b) Ethylene glycol and Terephthalic acid
c) Acetone and Formaldehyde
d) Butadiene and Styrene
Answer: b) Ethylene glycol and Terephthalic acid
Explanation: Terylene (Polyethylene terephthalate) is prepared
by the polymerization of ethylene glycol and terephthalic acid.
a) Elimination of a small molecule
b) Formation of a polymer without a by-product
c) Formation of a polymer with the elimination of water
d) Polymerization involving bifunctional monomers only
Answer: b) Formation of a polymer without a by-product
Explanation: Addition polymerization results in the formation
of polymers without any by-products.
a) Nylon
b) Kevlar
c) Teflon
d) Bakelite
Answer: b) Kevlar
Explanation: Kevlar is used in the production of bulletproof
vests due to its high tensile strength and light weight.
a) Natural rubber
b) Neoprene
c) Gutta-percha
d) Vulcanized rubber
Answer: b) Neoprene
Explanation: Neoprene is a synthetic rubber produced by the
polymerization of chloroprene.
a) Formaldehyde and phenol
b) Styrene and acrylonitrile
c) Acetone and formaldehyde
d) Terephthalic acid and ethylene glycol
Answer: a) Formaldehyde and phenol
Explanation: Bakelite is a thermosetting plastic made by the
polymerization of phenol and formaldehyde.
a) Polythene
b) Cellulose
c) PVC
d) Nylon
Answer: b) Cellulose
Explanation: Cellulose is a natural polymer found in plant cell
walls.
a) Addition polymerization
b) Condensation polymerization
c) Copolymerization
d) Ring-opening polymerization
Answer: b) Condensation polymerization
Explanation: In condensation polymerization, bi-functional or
tri-functional monomers react step by step, with the elimination of a small
molecule (like water).
a) -CH2-CH2-
b) -C6H5-CH2-
c) -C6H5-CH=CH2-
d) -C6H5-C(CH3)2-
Answer: c) -C6H5-CH=CH2-
Explanation: The repeat unit of polystyrene is derived from the
polymerization of styrene, which has the structure -C6H5-CH=CH2-.
a) PVC
b) PTFE
c) Polypropylene
d) Polythene
Answer: b) PTFE
Explanation: PTFE (Polytetrafluoroethylene), commonly known as
Teflon, is formed by the polymerization of tetrafluoroethylene.
a) Irreversible hardening on heating
b) They cannot be remolded
c) They are usually brittle
d) They can be softened on heating
Answer: d) They can be softened on heating
Explanation: Thermosetting polymers harden irreversibly when
heated and cannot be softened again.
a) Hexamethylene diamine and adipic acid
b) Caprolactam
c) Terephthalic acid and ethylene glycol
d) Methyl methacrylate
Answer: b) Caprolactam
Explanation: Nylon-6 is prepared from caprolactam through
polymerization.
a) Polystyrene
b) Nylon-6
c) Bakelite
d) Polythene
Answer: c) Bakelite
Explanation: Bakelite is produced by step-growth
polymerization, where bi-functional monomers react to form polymers with
cross-links.
a) Neoprene
b) Bakelite
c) Polystyrene
d) Buna-S
Answer: d) Buna-S
Explanation: Buna-S is a copolymer of 1,3-butadiene and
styrene.
a) Nylon-6
b) Polyethylene
c) Terylene
d) Bakelite
Answer: a) Nylon-6
Explanation: Nylon-6 is used in the manufacture of
high-strength fibers, such as in ropes and fabrics.
a) Teflon
b) Nylon
c) Polylactic acid
d) Bakelite
Answer: c) Polylactic acid
Explanation: Polylactic acid (PLA) is a biodegradable polymer
commonly used in packaging materials.
a) Styrene
b) Tetrafluoroethylene
c) Vinyl chloride
d) Ethene
Answer: c) Vinyl chloride
Explanation: PVC (Polyvinyl chloride) is formed by the
polymerization of vinyl chloride.
a) Bakelite
b) Nylon-6,6
c) Terylene
d) Polystyrene
Answer: b) Nylon-6,6
Explanation: Nylon-6,6 is produced by the condensation
polymerization of hexamethylenediamine and adipic acid.
a) PVC
b) Bakelite
c) Polystyrene
d) Teflon
Answer: d) Teflon
Explanation: Teflon (PTFE) is an excellent electrical insulator
and is used in electrical wiring.
a) Polystyrene
b) Polypropylene
c) PVC
d) Polyethylene
Answer: c) PVC
Explanation: PVC is used in the production of medical devices
like syringes, IV tubes, etc., due to its rigidity and low cost.
a) Formation of double bonds
b) Formation of a new C-C bond
c) Elimination of a small molecule like water
d) Formation of a large molecule in a single step
Answer: c) Elimination of a small molecule like water
Explanation: In condensation polymerization, two molecules join
with the elimination of a small molecule, typically water.
a) Can be melted and reshaped
b) Can only be shaped once
c) Are non-biodegradable
d) Are soft at room temperature
Answer: b) Can only be shaped once
Explanation: Thermosetting polymers can be molded only once.
After curing, they cannot be remolded.
a) Electrical cables
b) Flooring
c) Medical devices
d) Aircraft bodies
Answer: d) Aircraft bodies
Explanation: PVC is not used in aircraft bodies but is widely
used in electrical cables, flooring, and medical devices.
a) Styrene
b) Nylon-6
c) Terylene
d) Bakelite
Answer: a) Styrene
Explanation: The polymerization of styrene to polystyrene is
initiated by free radicals, making it a free radical polymerization process.
a) Polythene
b) Buna-N
c) PVC
d) Bakelite
Answer: b) Buna-N
Explanation: Buna-N is a copolymer of butadiene and
acrylonitrile.
a) Nylon
b) Neoprene
c) PVC
d) Polystyrene
Answer: b) Neoprene
Explanation: Neoprene, a synthetic rubber, is made from the
polymerization of chloroprene.
a) Acetone and formaldehyde
b) Phenol and formaldehyde
c) Styrene and acrylonitrile
d) Terephthalic acid and ethylene glycol
Answer: b) Phenol and formaldehyde
Explanation: Bakelite is a thermosetting polymer prepared by
the polymerization of phenol and formaldehyde.
a) Nylon-6
b) Polylactic acid
c) PVC
d) Bakelite
Answer: b) Polylactic acid
Explanation: Polylactic acid (PLA) is a biodegradable polymer
derived from renewable resources, making it a biopolymer.
a) Styrene
b) Vinyl chloride
c) Tetrafluoroethylene
d) Butadiene
Answer: a) Styrene
Explanation: Polystyrene is produced from the polymerization of
the monomer styrene (C6H5CH=CH2).
a) Involves a condensation reaction
b) Results in the formation of a by-product
c) Involves the formation of a polymer by the addition of monomers
d) Requires the elimination of a small molecule
Answer: c) Involves the formation of a polymer by the addition
of monomers
Explanation: In addition polymerization, the monomers add to
each other without the elimination of any molecule.
a) Polystyrene
b) Polythene
c) Nylon-6
d) PVC
Answer: b) Polythene
Explanation: Polythene is widely used in the preparation of
containers, plastic bottles, and plastic bags.
a) Phenol
b) Formaldehyde
c) Both a and b
d) Styrene
Answer: c) Both a and b
Explanation: Bakelite is formed by the polymerization of phenol
and formaldehyde.
a) Polyethylene
b) Polystyrene
c) Polyvinyl chloride
d) Polytetrafluoroethylene
Answer: a) Polyethylene
Explanation: Polyethylene is formed by the polymerization of
ethene (C2H4).
a) They can be melted and reshaped
b) They cannot be reshaped
c) They are usually rigid and brittle
d) They harden irreversibly when heated
Answer: a) They can be melted and reshaped
Explanation: Thermoplastic polymers soften upon heating and can
be reshaped.
a) Terylene
b) Bakelite
c) PVC
d) Teflon
Answer: a) Terylene
Explanation: Terylene is a polyester used in the production of
synthetic fibers, commonly known as polyester.
a) PVC
b) Bakelite
c) PTFE
d) Terylene
Answer: c) PTFE
Explanation: PTFE (Teflon) is used in non-stick cookware due to
its high resistance to heat and stickiness.
a) Styrene and acrylonitrile
b) Butadiene and styrene
c) Ethene and propene
d) Vinyl chloride and ethene
Answer: b) Butadiene and styrene
Explanation: Buna-S is a copolymer of butadiene and styrene
used as synthetic rubber.
a) They decompose naturally
b) They are non-biodegradable
c) They are resistant to environmental degradation
d) They are usually thermosetting plastics
Answer: a) They decompose naturally
Explanation: Biodegradable polymers decompose naturally by the
action of microorganisms.
a) Terylene
b) Nylon-6,6
c) Bakelite
d) Nylon-6
Answer: b) Nylon-6,6
Explanation: Nylon-6,6 is formed by the condensation
polymerization of hexamethylenediamine and adipic acid.
a) Monomers must have a double bond
b) Small molecules are eliminated
c) Only one type of monomer is used
d) The polymer formed is a long chain
Answer: b) Small molecules are eliminated
Explanation: In addition polymerization, there is no
elimination of small molecules.
a) -COOH
b) -C6H5-CH2-
c) -COO-CH2CH2O-
d) -CH2CH2-
Answer: c) -COO-CH2CH2O-
Explanation: Terylene (Polyethylene terephthalate) is made from
ethylene glycol and terephthalic acid, with the repeat unit -COO-CH2CH2O-.
a) Polystyrene
b) PVC
c) Polypropylene
d) Teflon
Answer: a) Polystyrene
Explanation: Polystyrene is widely used in the manufacture of
disposable drinking cups and packaging materials.
a) Polypropylene
b) Kevlar
c) Nylon-6,6
d) PVC
Answer: b) Kevlar
Explanation: Kevlar is used in bulletproof vests because of its
high strength and durability.
a) Ethene
b) Propene
c) Vinyl chloride
d) Tetrafluoroethylene
Answer: d) Tetrafluoroethylene
Explanation: Teflon (PTFE) is formed by the polymerization of
tetrafluoroethylene.
a) Neoprene
b) Polystyrene
c) Buna-N
d) Nylon-6
Answer: a) Neoprene
Explanation: Neoprene is a polymer made from the polymerization
of 1,4-butadiene.
a) Polystyrene
b) PVC
c) Polycarbonate
d) Nylon-6
Answer: c) Polycarbonate
Explanation: Polycarbonate is used in the production of
photographic films and optical lenses due to its clarity and strength.
a) It is used in the manufacture of textiles
b) It is produced from adipic acid and hexamethylenediamine
c) It is a thermoplastic polymer
d) It has high tensile strength
Answer: c) It is a thermoplastic polymer
Explanation: Nylon-6,6 is a thermosetting polymer, not a
thermoplastic.
a) PVC
b) Polypropylene
c) Polystyrene
d) Polyethylene
Answer: a) PVC
Explanation: PVC (Polyvinyl chloride) is obtained by the
polymerization of vinyl chloride.
a) Polyethylene
b) Polypropylene
c) Polylactic acid (PLA)
d) PVC
Answer: c) Polylactic acid (PLA)
Explanation: Polylactic acid (PLA) is a biodegradable plastic
derived from renewable resources like corn starch or sugarcane.