In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross-linked polymer ? September 7, 2025 by Admin Bakelite (phenol formaldehyde) Polyester Polythene Nylon-6 ✅ The correct answer is option A.
Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is September 7, 2025 by Admin Ni V2O5 Fe aluminium triethyl combined with titanium tetrachloride ✅ The correct answer is option D.
Orlon is September 7, 2025 by Admin a copolymer. a condensation polymer. obtained by polymerising vinyl cyanide. all (a), (b) and (c). ✅ The correct answer is option C.
__________ is a copolymer. September 7, 2025 by Admin Nylon-66 Polyrophylene PVC Poly tetra flouro ethylene ✅ The correct answer is option A.
Neoprene is a September 7, 2025 by Admin monomer synthetic rubber polyester none of these ✅ The correct answer is option B.
Branched chain polymers compared to linear polymers have higher September 7, 2025 by Admin density. tensile strength. melting point. degree of irregularity in atomic packing. ✅ The correct answer is option D.
Alkyd resin can not be used for making September 7, 2025 by Admin plasticiser paint & varnish fibres film forming materials ✅ The correct answer is option C.
Which of the following is not a natural polymer ? September 7, 2025 by Admin Nucleic acids e.g. RNA and DNA Polysaccharides Polyisoprene Polyurethane ✅ The correct answer is option D.
Condensation polymerisation is not involved in the manufacture of September 7, 2025 by Admin teflon polythene terylene nylon ✅ The correct answer is option B.
Polyvinyl acetate is never used for making September 7, 2025 by Admin moulded articles fibres adhesives all (a), (b) & (c) ✅ The correct answer is option A.