Kerala PSC - Important and Expected General Science Questions - 39

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1. What are the examples for natural polymers?

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2. What are the examples for synthetic polymers?

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3. The polymers soften on heating and become hard on cooling & can be remoulded, recast and reshaped are known as ___

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4. The polymers that can only be mouled into desired shape on heating once & cannot be reused are known as ___

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5. Which is the semi-synthetic polymer obtained by chemical treatment of wood pulp (cellulose)?

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6. What is known as 'Artificial silk'?

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7. What is the type of polymerisation in which simple monomers are united together without loss of small molecules?

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8. Name the important addition polymers?

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9. Which type of polymer is obtained by polymerisation of ethylene?

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10. Which polymer is used in the insulation wires and manufacturing of squeeze bottles, boys, flexible pipes and buckets?

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11. Which type of polymer is obtained by the polymerization of tetrafluoro ethylene?

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12. Which type of polymer is used as a substitute for wool in making commercial fibres?

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13. Which type of polymer is used in indoor/outdoor carpetting and upholstery?

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14. Which type of polymers are stronger than steel, stiffer than titanium and lighter than aluminium?

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15. Which type of polymer is used in defence sector as nose tips and head shields of missiles?

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16. What are the examples of condensation polymers?

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17. In which type of polymerisation is simple monomers are joined together with loss of small molecules like water & ammonia?

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18. What is obtained by the condensation polymerisation of phenol and formaldehyde?

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19. The natural rubber is a linear polymer of?

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20. The natural rubber is obtained from the ___ of the rubber tree?

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