JEE Chemistry Polymers MCQs Set A

Question: Which is not true about polymers?

• a) Polymers have low molecular weight
• b) Polymers scatter light
• c) Polymers have high viscosity
• d) Polymers do not carry any charge

Answer:  Polymers have low molecular weight

Question: Which of the following belongs to the class of natural polymers?

• a) All of these
• b) Cellulose
• c) Rubber
• d) Proteins

Answer: All of these

Question: Which of the following natural products is not a polymer?

• a) ATP
• b) DNA
• c) Cellulose
• d) Urease

Answer: ATP

Question: Among the following a natural polymer is

• a) cellulose
• b) teflon
• c) polyethylene
• d) PVC

Answer: cellulose

Question: Which of the following is not a biopolymer ?

• a) Rubber
• b) RNA
• c) Proteins
• d) Cellulose

Answer: Rubber

Question: Rayon is

• a) artificial silk
• b) natural rubber
• c) synthetic plastic
• d) natural silk

Answer: artificial silk

Question: Protein is a polymer of:

• a) amino acids
• b) glucose
• c) terephthalic acid
• d) None of these

Answer: amino acids

Question: Natural silk is a

• a) polyamide
• b) polysaccharide
• c) polyester
• d) polyacid

Answer: polyamide

Question: Polymers are:

• a) macromolecules
• b) None of the above
• c) micromolecules
• d) sub-micromolecules

Answer: macromolecules

Question: Which of the following is/are a semisynthetic polymers?

• a) Both
• b) Cellulose acetate
• c) Cellulose nitrate
• d) None of these

Answer: Both

Question: Which of the following is not linear polymer ?

• a) Bakelite
• b) Cellulose
• c) Polyester
• d) High density polyethene

Answer: Bakelite

Question: A polymer is formed when simple chemical units

• a) combine to form long chains
• b) combine to form helical chains
• c) break up
• d) become round

Answer: combine to form long chains

Question: Polymer formation from monomers starts by

• a) condensation reaction between monomers
• b) coordinate reaction between monomers
• c) conversion of monomer to monomer ions by protons
• d) hydrolysis of monomers

Answer: condensation reaction between monomers

Question: On the basis of mode of formation, polymers can be classified?

• a) both as addition and condensation polymers
• b) as copolymers
• c) as condensation polymers only
• d) as addition polymers only

Answer: both as addition and condensation polymers

Question: In addition polymer monomer used is

• a) unsaturated compounds
• b) saturated compounds
• c) bifunctional saturated compounds
• d) trifunctional saturated compounds

Answer: unsaturated compounds

Question: Nylon 66 belongs to the class of

• a) Condensation heteropolymer
• b) Addition homopolymer
• c) Condensation polymer
• d) Addition polymer

Answer: Condensation heteropolymer

Question: A polymer made from a polymerization reaction that produces small molecules (such as water) as well as the polymer is classified as a/an ..... polymer

• a) condensation
• b) addition
• c) natural
• d) elimination

Answer: condensation

Question: In elastomer, intermolecular forces are

• a) weak
• b) None of these
• c) strong
• d) nil

Answer: weak

Question: A thermoplastic among the following is

• a) polystyrene
• b) urea-formaldehyde resin
• c) bakelite
• d) terylene

Answer: polystyrene

Question: Which is an example of thermosetting polymer?

• a) Neoprene
• b) Polythene
• c) PVC
• d) Bakelite

Answer: Neoprene

More Questions.............................

Question: Which of the following is thermoplastic ?

• a) Polyethylene
• b) All of these
• c) Bakelite
• d) Terylene

Answer: Polyethylene

Question: Thermosets are

• a) all of the above
• b) cross-linking is usually developed at the time of moulding where they harden reversibly
• c) don’t melt or soften on heating
• d) cross-linked polymers

Answer: all of the above

Question: Which is/are true for elastomers?

• a) All of the above
• b) Vulcanised rubber is an example of elastomer
• c) These possess very weak intramolecular forces or attractions between polymer chains
• d) These are synthetic polymers possessing elasticity

Answer: All of the above

Question: Among the following polymers the strongest molecular forces are present in

• a) thermosetting polymers
• b) fibres
• c) elastomers
• d) thermoplastics

Answer: thermosetting polymers

Question: Three dimensional molecular structure with cross links are formed in the case of a

• a) thermosetting plastic
• b) thermoplastic
• c) Both
• d) None of the above

Answer: thermosetting plastic

Question: Which of the following polymer is an example of fibre ?

• a) All of these
• b) Dacron
• c) Silk
• d) Nylon-66

Answer: All of these

Question: Which of the following statements is not correct for fibres?

• a) All are correct
• b) Characteristic features of fibres are due to strong intermolecular forces like hydrogen bonding
• c) Fibres impart crystalline nature
• d) Fibres possess high tensile strength and high modulus

Answer: All are correct

Question: Which of the following is/are examples of fibres?

• a) Both
• b) Polyamide
• c) Polyesters
• d) None of these

Answer: Both

Question: Which of the following can be repeatedly soften on heating?

(i) Polystyrene (ii) Melamine
(iii) Polyesters (iv) Polyethylene

• a) (i) and (iv)
• b) (ii) and (iv)
• c) (i) and (iii)
• d) (iii), (iv) and (v)

Answer: (i) and (iv)

Question: Which of the following does not undergo addition polymerization?

• a) All of the above undergoes addition polymerizations
• b) Styrene
• c) Butadiene
• d) Vinylchloride

Answer: All of the above undergoes addition polymerizations

Question: Which of the following is a cross linked polymer?

• a) Bakelite
• b) Rubber
• c) PVC
• d) Polyethylene

Answer: Bakelite

Question: Fibres that have good resistance to stains, chemicals, insects and fungi is

• a) Acrylic
• b) Terylene
• c) Nylon
• d) All of these

Answer:  Acrylic

Question: Which of the following statements is not true about low density polythene?

• a) Poor conductor of electricity
• b) Hard
• c) Tough
• d) Highly branched structure

Answer: Poor conductor of electricity

Question: Low density polythene is prepared by

• a) Free radical polymerisation
• b) Cationic polymerisation
• c) Anionic polymerisation
• d) Ziegler-Natta polymerisation

Answer: Free radical polymerisation

Question: The monomer(s) used in the preparation of Orlon, a substitute for wool is/are

• a) acrylonitrile
• b) styrene and 1, 3-butadiene
• c) tetrafluoroethene
• d) caprolactam

Answer: acrylonitrile

Question: Orlon is a polymer of

• a) acrylonitrile
• b) tetrafluoroethylene
• c) styrene
• d) vinyl chloride

Answer: acrylonitrile

Question: Which of the following polymer is used for manufacturing of buckets, dustbins, pipes etc ?

• a) High density polythene
• b) Low density polythene
• c) Teflon
• d) Polyacrylonitrile

Answer: High density polythene

Question: Which of the following catalyst is used in preparation of high density polythene ?

• a) Ziegler - Natta catalyst
• b) Peroxide catalyst
• c) Wilkinson’s catalyst
• d) Pd - catalyst

Answer:  Ziegler - Natta catalyst

Question: Which of the following statements is false?

• a) Nylon-66 is an example of elastomer
• b) Artificial silk is derived from cellulose
• c) The repeat unit in natural rubber is isoprene
• d) Both starch and cellulose are polymers of glucose

Answer: Nylon-66 is an example of elastomer

Question: Melamine plastic crockery is a copolymer of

• a) HCHO and melamine
• b) melamine and ethylene
• c) HCHO and ethylene
• d) None of these

Answer: HCHO and melamine

Question: Caprolactam polymerises to give

• a) nylon-6
• b) teflon
• c) terylene
• d) glyptal

Answer: nylon-6

Question:  Nylons, polysters and cotton, all posses strength due to:

• a) intermolecule H-bonding
• b) van der Waals’ attraction
• c) dipole-dipole interaction
• d) None of the above

Answer: intermolecule H-bonding

Question: Interparticle forces present in nylon-66 are

• a) hydrogen bonding
• b) van der waal’s
• c) dipole-dipole interactions
• d) None of these

Answer: hydrogen bonding

Question: The plastic household crockery is prepared by using

• a) melamine and formaldehyde
• b) melamine and vinyl acetate
• c) malonic acid and hexamethyleneamine
• d) melamine and tetrafluoroethane

Answer: melamine and formaldehyde

Question:  Which of the following is currently used as a tyre cord ?

• a) Nylon - 6
• b) Polyethylene
• c) Terylene
• d) Polypropylene

Answer: Nylon - 6

Question: Of the following which one is classified as polyester polymer ?

• a) Terylene
• b) Bakelite
• c) Bakelite
• d) Nylon-66

Answer: Terylene

Question: Which one of the following is not a condensation polymer ?

• a) Neoprene
• b) Glyptal
• c) Melamine
• d) Dacron

Answer: Neoprene

Question: Bakelite is obtained from phenol by reacting with

• a) HCHO
• b) CH₃CHO
• c) (CH₂OH)₂
• d) None of these

Answer: HCHO

Question: The polymer containing strong intermolecular forces e.g. hydrogen bonding, is

• a) nylon 6, 6
• b) natural rubber
• c) teflon
• d) polystyrene

Answer: nylon 6, 6

Question: Nylon threads are made of

• a) polyamide polymer
• b) polyvinyl polymer
• c) polyester polymer
• d) polyethylene polymer

Answer: polyamide polymer

Question: Which of the following polymer is a polyamide ?

• a) Nylon
• b) Vulcanised rubber
• c) Terylene
• d) Rubber

Answer: Nylon

Question: Acetic acid is added in the preparation of Nylon-6 due to

• a) avoid polymerisation at first step
• b) avoid oxidation
• c) removal of water
• d) initiate polymerisation

Answer: avoid polymerisation at first step

Question: The bakelite is made from phenol and formaldehyde. The initial reaction between the two compounds is an example of:

• a) aromatic electrophilic substitution
• b) aromatic nucleophilic substitution
• c) free radical reaction
• d) aldol reaction

Answer: aromatic electrophilic substitution

Question: Melamine plastic crockery is a codensation polymer of

• a) HCHO and melamine
• b) HCHO and ethylene
• c) melamine and ethylene
• d) None of these

Answer: HCHO and melamine

Question: Which of the following polymer is used for making phonograph records ?

• a) Bakelite
• b) Dacron
• c) Teflon
• d) PVC

Answer:  Bakelite