91. Which of the following is a polymer of tetrafluoroethylene?
- a) Nylon-6
- b) Polyvinyl chloride
- c) Teflon
- d) Polypropylene
Answer: c) Teflon
Explanation: Teflon is a polymer of tetrafluoroethylene, known for its non-stick properties and resistance to high temperatures and chemicals.
92. Which polymer is used in making artificial silk?
- a) Rayon
- b) Nylon-6,6
- c) Polyester
- d) Polyethylene
Answer: a) Rayon
Explanation: Rayon is a semi-synthetic polymer used in making artificial silk. It is derived from cellulose and has a silky appearance and texture.
93. Which polymer is used to make packaging foams and insulation materials?
- a) Polypropylene
- b) Polystyrene
- c) Nylon
- d) Polyethylene
Answer: b) Polystyrene
Explanation: Polystyrene is commonly used in making packaging foams, insulation materials, and disposable cups due to its lightweight and insulating properties.
94. Which of the following polymers is a copolymer?
- a) Nylon-6
- b) Buna-S
- c) Polystyrene
- d) Polyvinyl chloride
Answer: b) Buna-S
Explanation: Buna-S is a copolymer of butadiene and styrene, used in making synthetic rubber with good abrasion resistance and durability.
95. Which of the following is a polyamide polymer?
- a) Polyethylene
- b) Nylon
- c) Polystyrene
- d) Polyvinyl chloride
Answer: b) Nylon
Explanation: Nylon is a polyamide polymer formed by the condensation polymerization of diamines and dicarboxylic acids.
96. Which of the following polymers is used in making carpets and rugs?
- a) Nylon-6
- b) Polyethylene
- c) Polystyrene
- d) Bakelite
Answer: a) Nylon-6
Explanation: Nylon-6 is commonly used in making carpets, rugs, and textiles due to its durability, resistance to wear, and ability to be dyed in various colors.
97. Which polymer is used for making bottles for carbonated beverages?
- a) Polyethylene
- b) Polystyrene
- c) Polyethylene terephthalate (PET)
- d) Polypropylene
Answer: c) Polyethylene terephthalate (PET)
Explanation: PET is used to make bottles for carbonated beverages due to its strength, transparency, and gas barrier properties.
98. Which of the following is a biodegradable synthetic polymer used in medical sutures?
- a) Polyvinyl chloride
- b) Poly(lactic acid) (PLA)
- c) Nylon-6
- d) Polyethylene
Answer: b) Poly(lactic acid) (PLA)
Explanation: PLA is a biodegradable synthetic polymer used in medical sutures due to its biocompatibility and ability to degrade in the body over time.
99. Which of the following polymers is used in making garden hoses and raincoats?
- a) Polyethylene
- b) Polyurethane
- c) Bakelite
- d) Polyvinyl chloride
Answer: d) Polyvinyl chloride
Explanation: PVC is used in making garden hoses and raincoats because of its flexibility, durability, and water resistance.
100. Which polymer is used in making CDs and DVDs?
- a) Polycarbonate
- b) Polystyrene
- c) Nylon-6,6
- d) Polyvinyl chloride
Answer: a) Polycarbonate
Explanation: Polycarbonate is used in making CDs and DVDs because of its strength, durability, and optical clarity.
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