Vinyl flooring is done using _____________ sheets?
Vinyl flooring is done using _____________ sheets?
A. Polypropylene
B. PVC
C. Polythene
D. Polyvinyl acetate
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Phenol formaldehyde __________________?
Phenol formaldehyde __________________?A. Employs addition polymerisation
B. Employs condensation polymerisation
C. Is a monomer
D. Is an abrasive materialRain coats are made of__________________?
Rain coats are made of__________________?A. Neoprene
B. PVC
C. Polyurethane
D. SBRRexine (also called artificial leather), which is used for making table cover, automobile seat cover, shoes etc. is made by coating thick cloth with molten_______________?
Rexine (also called artificial leather), which is used for making table cover, automobile seat cover, shoes etc. is made by coating thick cloth with molten_______________?A. Teflon
B. Bakelite
C. SBR
D. PVCMolecular weights of plastics ranges from_______________?
Molecular weights of plastics ranges from_______________?A. 1000 to 5000
B. 5000 to 1000
C. 20000 to 25000
D. 109 to 1011Flexible plastic pipes are made of___________________?
Flexible plastic pipes are made of___________________?A. High density polyethylene (HDPE)
B. Low density polyethylene (LDPE)
C. Polypropylene
D. Unsaturated polyesterEpoxy resins (i.e., epoxide polymers) ?
Epoxy resins (i.e., epoxide polymers) ?A. Are made by addition polymerisation reaction only
B. Contain an epoxy group (fig bellow) at the ends of the polymer
C. Are cross-linked polymers only
D. Use emulsion polymerisation methods