Polymer Technology Mcqs
Q.1: Pick out the wrong statement?
A. Denier is defined as weight in gm of 9000 metres length of a fibre, while tex is defined as weight in gm of 1000 metres length of fibre
B. Crimp is a measure of the difference between the length of the straightened and unstraightened fibred
C. Dacron fibres, acrylic fibres, viscose rayon fibres & cellulose acetate fibres are all prepared by wet spinningo
D. Nylon fibres have greater water absorption capacity than polyester fibresI
Q.2: Pick out the wrong statement ?
A. Polystyrene is a thermoplastic polymer&
B. Protein is a natural polymer
C. Neoprene is a natural rubber
D. Polythene is a copolymer, while SBR is a homopolymer4
Q.3: Pick out the wrong statement?
A. Polymers made of only one monomer is called homopolymer7
B. Polymers made of more than one monomer is called copolymer or mixed polymerK
C. Vulcanised rubber is more elastic than natural rubber5
D. The intermolecular forces in thermoplastic polymers are intermediate to that of elastomers &\
Q.4: Pick out the wrong statement ?
A. Addition polymers are generally formed by chain growth polymerisationE
B. Condensation polymers are generally formed by step growth polymerisationH
C. Teflon is formed by step growth polymerisation.
D. Bakelite is formed by step growth polymerisation0
Q.5: Pick out the wrong statement ?
A. Polymeric fibres are never produced by addition polymerisation>
B. Property of tackiness is exhibited by uncured rubber4
C. Sharp melting point is not observed in thermoplastic polymers=
D. Polythene generally has an excellent resistance to ultra violet raysD
Q.6: Pick out the wrong statement ?
A. Linear polymers are formed from bifunctional groups only and are normally thermoplasticW
B. Cross-linked branched chain polymers are either elastometric or thermosettingM
C. Branching in case of cross-linked polymers caused by small amount of impurities inR
D. bifunctional monomer formulation reduces its solubility and increases the softening pointY
Q.7: Pick out the wrong statement ?
A. Cold SBR is superior as compared to hot SBR+
B. Polymerisation temperature can modify the properties of SBR;
C. Production of cold SBR employs lower pressure as compared to that of hot SBRL
D. None of these
Q.8: Buna-S is also called____________________?*
A. Polyurethane
B. SBR
C. Teflon
D. Bakelite
Q.9: Which of the following is not a polymer of two monomers ?9
A. Teflon
B. Bakelite
C. SBR
D. None of these
Q.10: Thermocol (expanded polystyrene) is not used for __________________?D
A. Low temperature thermal insulation as in refrigerator and air conditionersJ
B. Acoustic control and ceiling for building)
C. High temperature thermal insulation in furnaces/
D. Packing of delicate electronic gadgets&

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