61. Benzoyl chloride is not used as a catalyst in the manufacture of
62. Celluloid is
63. The process involved in converting rubber into a thin sheet or coating it on fabric is called
64. Styrene butadiene rubber (SBR) as compared to natural rubber has
65. The major component of acrylic fibres is
66. Addition polymerisation takes place either by a free radical mechanism or ionic machanism depending on the reagents used. Free radical polymerisation is catelyzed by __________ , which decompose to give free radicals.
67. Main constituent of cotton fibre is
68. Cross linked polymers are
69. Starting material for the production of butadiene in India is
70. Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about __________ ° C.
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