Q. What is the main monomer used to produce polystyrene? (2021)
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A.
Ethylene
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B.
Styrene
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C.
Propylene
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D.
Vinyl chloride
Solution
Polystyrene is produced from the polymerization of styrene monomers.
Correct Answer: B — Styrene
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Q. What is the repeating unit of polystyrene? (2021)
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A.
-CH2-CH2-
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B.
-CH=CH2-
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C.
-C6H5-
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D.
-C3H6-
Solution
The repeating unit of polystyrene is derived from the monomer styrene, which has the structure -CH=CH2-.
Correct Answer: B — -CH=CH2-
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Q. What type of polymer is formed by the polymerization of isoprene? (2019)
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A.
Natural rubber
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B.
Nylon
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C.
Polyethylene
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D.
Teflon
Solution
Natural rubber is formed by the polymerization of isoprene.
Correct Answer: A — Natural rubber
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Q. What type of polymer is rubber classified as? (2019)
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A.
Thermoplastic
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B.
Thermosetting
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C.
Elastomer
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D.
Composite
Solution
Rubber is classified as an elastomer, which is a type of polymer that exhibits elastic properties.
Correct Answer: C — Elastomer
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Q. Which of the following is a characteristic of addition polymers? (2019)
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A.
Formed by condensation
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B.
Involves the elimination of small molecules
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C.
Monomers have double bonds
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D.
Decomposes easily
Solution
Addition polymers are formed from monomers that contain double bonds, which open up to form long chains.
Correct Answer: C — Monomers have double bonds
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Q. Which of the following is a characteristic of cross-linked polymers? (2023)
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A.
Flexible
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B.
Linear structure
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C.
High melting point
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D.
Low tensile strength
Solution
Cross-linked polymers have a three-dimensional network structure, which gives them a high melting point and strength.
Correct Answer: C — High melting point
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Q. Which of the following is a property of addition polymers? (2022)
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A.
They are formed by the elimination of small molecules
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B.
They have a high degree of crystallinity
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C.
They are formed from unsaturated monomers
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D.
They are always biodegradable
Solution
Addition polymers are formed from unsaturated monomers through addition reactions.
Correct Answer: C — They are formed from unsaturated monomers
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Q. Which of the following is NOT a characteristic of polymers? (2023)
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A.
High molecular weight
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B.
Low melting point
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C.
Viscoelasticity
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D.
Solubility in water
Solution
Polymers typically have low solubility in water, especially synthetic ones.
Correct Answer: D — Solubility in water
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Q. Which of the following is NOT a property of thermoplastics? (2022)
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A.
Can be remolded
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B.
Softens on heating
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C.
Hardens on cooling
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D.
Brittle at room temperature
Solution
Thermoplastics are generally not brittle at room temperature; they can be reshaped upon heating.
Correct Answer: D — Brittle at room temperature
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Q. Which of the following is not a step in the process of condensation polymerization? (2023)
-
A.
Formation of a covalent bond
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B.
Elimination of a small molecule
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C.
Addition of monomers
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D.
Rearrangement of functional groups
Solution
Addition of monomers is not a step in condensation polymerization; it is characteristic of addition polymerization.
Correct Answer: C — Addition of monomers
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Q. Which of the following polymers is used in the making of rubber? (2019)
-
A.
Polyethylene
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B.
Natural rubber
-
C.
Polystyrene
-
D.
Polyvinyl acetate
Solution
Natural rubber is a polymer made from the latex of rubber trees and is widely used in the production of rubber products.
Correct Answer: B — Natural rubber
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Q. Which of the following polymers is used in the manufacture of rubber? (2019)
-
A.
Polyethylene
-
B.
Natural rubber
-
C.
Polystyrene
-
D.
Polyvinyl acetate
Solution
Natural rubber is a polymer made from the latex of rubber trees and is widely used in the manufacture of rubber products.
Correct Answer: B — Natural rubber
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Q. Which of the following polymers is used in the production of rubber? (2019)
-
A.
Polyethylene
-
B.
Natural rubber
-
C.
Polystyrene
-
D.
Polyvinyl acetate
Solution
Natural rubber is a polymer made from the latex of rubber trees and is widely used in the production of rubber products.
Correct Answer: B — Natural rubber
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Q. Which polymer is commonly used in the production of fibers for clothing? (2020)
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A.
Polyethylene
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B.
Nylon
-
C.
Polystyrene
-
D.
Polyvinyl acetate
Solution
Nylon is commonly used in the production of fibers for clothing due to its strength and elasticity.
Correct Answer: B — Nylon
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Q. Which polymer is commonly used in the production of non-stick cookware? (2023)
-
A.
Polyethylene
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B.
Polytetrafluoroethylene (PTFE)
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C.
Polypropylene
-
D.
Polyvinyl chloride (PVC)
Solution
Polytetrafluoroethylene (PTFE), commonly known as Teflon, is used in non-stick cookware due to its low friction properties.
Correct Answer: B — Polytetrafluoroethylene (PTFE)
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Q. Which polymer is commonly used in the production of synthetic fibers? (2023)
-
A.
Polyethylene
-
B.
Nylon
-
C.
Polystyrene
-
D.
Polyvinyl acetate
Solution
Nylon is a synthetic polymer widely used in the production of synthetic fibers for clothing and textiles.
Correct Answer: B — Nylon
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