Polymer

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Across
  1. 1. Synthesised in laboratory from natural material.
  2. 3. Formed by repeated condensation of different bi or tri-functional monomer units.
  3. 4. Soften on heating and stiffen on Cooling. e.g polythene, polystyrene, PVC.
  4. 9. The process of formation of polymers from respective monomers.
  5. 10. Found in plants and animals.
  6. 11. It is obtained by free radical polymerisation of chloroprene.
  7. 13. Large molecules having high molecular mass formed by combination of number of small units called
Down
  1. 2. Do not soften on heating and cannot be remoulded. Example, bakelite.
  2. 5. Formed by repeated addition of monomers having multiple bonds.
  3. 6. Addition polymers polymers formed from single monomeric species.
  4. 7. A condensation polymer formed by reaction between adipic acid and hexamethylene diamine. It is a thermoplastic polymer.
  5. 8. It is polymer of tetrafluorethylene (F2C=CF2) which on polymerisation gives.
  6. 12. Addition polymers formed from two different monomeric species.