Q.1 Which of the following is a natural polymer?
Nylon
Polyethylene
Cellulose
Teflon
Explanation - Cellulose is a natural polymer found in plants; Nylon and Polyethylene are synthetic polymers, and Teflon is a synthetic fluoropolymer.
Correct answer is: Cellulose
Q.2 Which polymer is commonly used in making Teflon-coated pans?
Polyvinyl Chloride
Polytetrafluoroethylene
Polypropylene
Polystyrene
Explanation - Teflon is a brand name for polytetrafluoroethylene (PTFE), known for its non-stick properties.
Correct answer is: Polytetrafluoroethylene
Q.3 Addition polymerization involves which type of reaction?
Condensation reaction
Chain-growth reaction
Redox reaction
Hydrolysis reaction
Explanation - Addition polymerization is a chain-growth reaction where monomers add to a growing chain without elimination of byproducts.
Correct answer is: Chain-growth reaction
Q.4 Which polymer is biodegradable?
Polyethylene
Polylactic acid
Polyvinyl chloride
Polystyrene
Explanation - Polylactic acid (PLA) is biodegradable and derived from renewable resources like corn starch.
Correct answer is: Polylactic acid
Q.5 The monomer of Nylon-6,6 is:
Hexamethylenediamine and Adipic acid
Caprolactam
Ethylene glycol and Terephthalic acid
Vinyl chloride
Explanation - Nylon-6,6 is formed by condensation polymerization of hexamethylenediamine with adipic acid.
Correct answer is: Hexamethylenediamine and Adipic acid
Q.6 Which polymer is used in making plastic bottles?
Polyethylene terephthalate
Polycarbonate
Nylon-6
Polystyrene
Explanation - PET (Polyethylene terephthalate) is widely used in plastic bottles due to its strength and transparency.
Correct answer is: Polyethylene terephthalate
Q.7 Vulcanization is a process associated with:
Nylon synthesis
Rubber hardening
Teflon production
Polyethylene polymerization
Explanation - Vulcanization is the process of heating rubber with sulfur to improve elasticity and strength.
Correct answer is: Rubber hardening
Q.8 Which polymer is used as a thermoplastic?
Bakelite
Polypropylene
Phenol-formaldehyde
Melamine
Explanation - Polypropylene is a thermoplastic, meaning it can be remolded upon heating, whereas Bakelite and Melamine are thermosetting plastics.
Correct answer is: Polypropylene
Q.9 Which polymer is commonly used in surgical sutures?
Polyglycolic acid
Polyethylene
Polypropylene
Polystyrene
Explanation - Polyglycolic acid (PGA) is a biodegradable polymer used in medical applications like surgical sutures.
Correct answer is: Polyglycolic acid
Q.10 Which polymer is formed by condensation polymerization of ethylene glycol and terephthalic acid?
Nylon-6,6
Polyethylene terephthalate
Polystyrene
Polypropylene
Explanation - PET is formed by the condensation reaction of ethylene glycol and terephthalic acid.
Correct answer is: Polyethylene terephthalate
Q.11 Which of the following is a synthetic rubber?
Natural rubber
Buna-S
Chitosan
Cellulose
Explanation - Buna-S is a synthetic rubber made from butadiene and styrene monomers, unlike natural rubber which is obtained from latex.
Correct answer is: Buna-S
Q.12 Which polymer is used in making bulletproof jackets?
Kevlar
Polystyrene
PVC
Polycarbonate
Explanation - Kevlar is a strong, high-strength polymer used in bulletproof vests due to its excellent tensile strength.
Correct answer is: Kevlar
Q.13 The repeating unit of polystyrene is derived from:
Ethylene
Styrene
Propylene
Vinyl chloride
Explanation - Polystyrene is an addition polymer formed from the monomer styrene.
Correct answer is: Styrene
Q.14 Which polymer is used for insulating electrical wires?
PVC
Polystyrene
Nylon-6
Teflon
Explanation - Polyvinyl chloride (PVC) is widely used as an insulating material for electrical wires due to its durability and insulation properties.
Correct answer is: PVC
Q.15 Phenol-formaldehyde resin is an example of:
Thermoplastic
Thermosetting polymer
Elastomer
Natural polymer
Explanation - Phenol-formaldehyde is a thermosetting polymer; once set, it cannot be remolded.
Correct answer is: Thermosetting polymer
Q.16 Which polymer is commonly used in water bottles and food packaging?
Polyethylene
Polypropylene
PET
PVC
Explanation - Polyethylene terephthalate (PET) is used for its transparency, strength, and food-safe properties.
Correct answer is: PET
Q.17 Which polymer is made by free radical polymerization?
Polyethylene
Nylon-6
Polyester
Bakelite
Explanation - Polyethylene is formed via free radical addition polymerization of ethylene monomers.
Correct answer is: Polyethylene
Q.18 Which polymer is used for making artificial heart valves?
Silicone
Polystyrene
PVC
Nylon-6
Explanation - Silicone polymers are biocompatible and flexible, making them suitable for artificial heart valves and other medical implants.
Correct answer is: Silicone
Q.19 Which polymer contains urethane linkages in its backbone?
Polyurethane
Polyethylene
Polystyrene
PVC
Explanation - Polyurethane is formed by condensation of diisocyanates and polyols and contains urethane linkages (-NHCOO-) in its backbone.
Correct answer is: Polyurethane
Q.20 Which polymerization involves elimination of small molecules like water?
Condensation polymerization
Addition polymerization
Chain-growth polymerization
Ring-opening polymerization
Explanation - In condensation polymerization, monomers react to form polymers with the elimination of small molecules such as water or methanol.
Correct answer is: Condensation polymerization
Q.21 Polyacrylonitrile is used in making:
Synthetic fibers
Plastic bottles
Rubber
Insulating tapes
Explanation - Polyacrylonitrile is a synthetic polymer used in making fibers like acrylic.
Correct answer is: Synthetic fibers
Q.22 Which polymer is used in making contact lenses?
Hydrogel
PVC
Polystyrene
Polypropylene
Explanation - Hydrogel polymers are used in soft contact lenses due to their high water content and flexibility.
Correct answer is: Hydrogel
Q.23 Which polymer is used in making milk containers and shampoo bottles?
High-density polyethylene (HDPE)
Polypropylene
Polystyrene
PVC
Explanation - HDPE is used for containers due to its strength, chemical resistance, and ability to withstand temperature variations.
Correct answer is: High-density polyethylene (HDPE)
Q.24 Which polymer is derived from vinyl chloride?
PVC
Polystyrene
Polyethylene
Nylon-6,6
Explanation - Polyvinyl chloride (PVC) is derived from the polymerization of vinyl chloride monomer.
Correct answer is: PVC
Q.25 Which polymer is commonly used in airbags?
Nylon
Polypropylene
Polyester
Polyurethane
Explanation - Nylon is used in airbags due to its high strength, elasticity, and heat resistance.
Correct answer is: Nylon