81. __________ is a copolymer.
82. The conversion of caprolactum in the above case is about __________ percent.
83. Polymethyl methacrylate (PMMA) which is also known as perspex and is produced by bulk polymerisation of methyl methacrylate is not a __________ polymer.
84. The monomer of natural rubber is
85. Caprolactum, a raw material for the manufacture of nylon-6, is produced from
86. Out of all the elastomers, natural rubber has the longest elongation range & flexibility of the order of __________ percent.
87. Polyesters are manufactured by the polycondensation reaction of
88. Which of the following has the weakest intermolecular forces?
89. Silicone resins, which are highly water repellant and has good heat resistance can not be used
90. Ebonite is a/an
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